US 8144184

I'll research this patent across USPTO records, litigation dockets, and CAFC filings.

Let me dig into the CAFC docket history and the PTAB outcomes for this specific patent.

Let me verify the CAFC appeal dockets and retrieve the actual claim language.

US 8,144,184 B2 — "Detection and viewing system"

1. Bibliographic record (as verified)

Ownership chain of record: Revolutionary Concepts, Inc. → EYETALK365, LLC (Aug. 20, 2015) → SkyBell Technologies, Inc. (license, 2018) → Alarm.com Incorporated (security interest, 2018; released 2019) → EYETALK365, LLC (Dec. 30, 2019) → SB IP HOLDINGS LLC (May 18, 2021) → Star Mountain Diversified Credit Income Fund III, LP (security interest, Aug. 5, 2022).
Source: https://patents.google.com/patent/US8144184/en

2. Abstract (verbatim from the record)

"An audio-video communication system comprises a wireless exterior module located proximate an entrance, a computerized controller running a software application, and a remote peripheral device. The wireless exterior module includes a proximity sensor for detecting a person at the entrance, a video camera for recording an image of the person at the entrance, a microphone for recording the person at the entrance, a speaker for playing audio to the person at the entrance, a transmitter for communicating sounds and images of the person at the entrance, and a receiver for receiving communications at the wireless exterior module. The computerized controller is disposed in wireless electronic communication with the wireless exterior module via the transmitter and the receiver of the wireless exterior module. The remote peripheral device is configured to electronically communicate with the computerized controller for viewing an image from the video camera communicated from the wireless exterior module."

3. Plain-language overview of the independent claims

⚠️ Accuracy caveat up front: the authoritative text supplied for this patent is truncated inside the Detailed Description; the verbatim, numbered claim set (column/line text) was not included, and my searches did not return the literal claim language. What follows is reconstructed from the patent's "Summary of the Invention" aspects and the abstract, which mirror the independent claims. Treat the wording below as a faithful paraphrase, not a verbatim quotation. I could not authoritatively confirm the total claim count or exact antecedent wording.

Independent claim A — System claim ("audio-video communication system").
A door/entrance answering system built from three cooperating pieces:

1. A wireless exterior module at the entrance containing (i) a proximity sensor that detects a person, (ii) a video camera to image the person, (iii) a microphone to capture their voice, (iv) a speaker to play audio back to them, plus (v) a transmitter for sending the sounds/images and (vi) a receiver for inbound communications.
2. A computerized controller (described in the spec as a personal computer) that runs a software application and is in wireless communication with the exterior module through that module's transmitter/receiver; the controller handles recording and playback of the communications, and the software presents a graphical user interface letting a user view the camera images sent from the module.
3. A remote peripheral device (cell phone, video phone, computer, PDA, etc.) that electronically talks to the controller so the user can view the camera image remotely.

So, in plain terms, claim A is the classic "smart video doorbell/intercom" architecture: sensor-triggered camera + mic + speaker outside, a local computer acting as DVR/controller inside, and a remote handheld/PC for viewing.

Independent claim B — Method claim ("two-way audio-video communications between a first person at an entrance and a second person").
Steps: (a) detect, via a proximity sensor at the entrance, the presence of the first person; then (b) conduct real-time two-way audio-video with a wireless handheld device, specifically by (i) transmitting video of the first person (camera at the entrance) to that handheld device, (ii) transmitting audio of the first person (microphone at the entrance) to the handheld device, and (iii) transmitting audio of the second person (captured by the handheld device) back to a speaker at the entrance. Dependent features include routing both camera and microphone wirelessly through a computerized controller running the GUI application; playing a recorded greeting on detection; saving the two-way session to a database; and sending video of the second person to a display at the entrance.

Independent claim C — Method claim ("receiving a person at an entrance").
Steps: (a) detect the person at the entrance with a proximity sensor; (b) transmit video of the person (camera at the entrance) to a computerized controller running a software application; and (c) have that application present a graphical user interface to a remote peripheral device through which the user can view the video. Dependent features add timestamped database storage of the video, real-time and after-the-fact (streamed) viewing, transmitting the person's audio to the controller so the user can hear it, recorded greetings (including seasonal audio/video greetings selectable remotely), posting a video greeting from the remote device, and remote camera actuation (zoom/pan) from the remote device.

Scope note: the disclosure's other prominent features — the electronically actuated door lock, voice recognition, and face/eye/fingerprint image recognition — are recited as dependent features in the specification's aspect list ("In addition… the present invention further encompasses the various possible combinations of such aspects and features"), not as elements of the broadest independent claims.

4. Post-grant and litigation posture (this materially affects the patent's value)

PTAB (two IPRs, both against the '184 patent):

• IPR2022-00811 — Vivint, Inc. v. SB IP Holdings LLC; filed Apr. 29, 2022; instituted Nov. 16, 2022; Final Written Decision Nov. 3, 2023 determining all challenged claims unpatentable (35 U.S.C. § 318(a)).
  https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2022-00811
• IPR2022-01364 — Vivint, Inc. v. SB IP Holdings; filed Aug. 19, 2022; instituted Apr. 17, 2023; Final Written Decision Apr. 10, 2024 determining all challenged claims unpatentable.
  https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2022-01364

Federal Circuit: the Google Patents record lists two appeals — 24-1331 and 24-1957. Both PTAB dockets show a "Fed. Cir. Order Dismissing Appeal" dated July 11, 2025 (following the patent owner's notices of appeal filed Jan. 4, 2024 and June 12, 2024). So the appeals terminated in July 2025; I found no evidence of any pending 2026 CAFC docket for US 8,144,184.
https://portal.unifiedpatents.com/litigation/Court%20of%20Appeals%20for%20the%20Federal%20Circuit/case/24-1331 ; …/case/24-1957

District court litigation (per the Google Patents litigation links and PACER-derived reporting):

• N.D. Cal. 8:22-cv-00034; N.C. W.D. 3:14-cv-00526; E.D. Tex. 4:22-cv-00648 and 4:21-cv-00912.
• In 4:21-cv-00912 (SB IP Holdings v. Vivint Smart Home), six related patents were asserted — US 8,144,184, US 8,139,098, US 8,164,614, US 8,154,581, US 7,193,644, and US 8,144,183 — and the case ended with an order that "this action is dismissed with prejudice in its entirety."
  https://www.patsnap.com/fr/resources/blog/litigation/sb-ip-holdings-v-vivint-smart-home-smart-home-video-patent-dispute-patsnap/

Related family action (different patents): ITC Investigation No. 337-TA-1242 (SkyBell/SB IP/EyeTalk365 v. Vivint, SimpliSafe, Arlo) was terminated in its entirety based on an initial determination of invalidity of the asserted patents (US 9,432,638; 9,485,478; 10,097,796; 10,097,797; 10,200,660; 10,523,906; 10,674,120). The Federal Circuit appeal in that matter (No. 22-1354) was voluntarily dismissed on June 27, 2022.
https://www.govinfo.gov/content/pkg/FR-2021-11-17/pdf/2021-25061.pdf

5. Explicit uncertainties

1. Claim text: I do not have the verbatim numbered claims from an authoritative source; the three independent claims above are paraphrases derived from the patent's summary sections and abstract. Anyone needing the operative claim language should pull the granted claims directly from USPTO PatentCenter or the patent's claim columns.
2. Effect of the IPRs on enforceability: Two final written decisions found "all challenged claims unpatentable," yet the Google Patents status still reads "Active – Reinstated." I cannot reconcile these from the records I retrieved — most likely explanation is that only a subset of claims was challenged and/or the FWDs did not become final in a way that issued a cancellation certificate, but I did not verify this. Do not treat the "active" status as a conclusion that all claims remain enforceable.
3. Expiration date: The listed "adjusted expiration" of October 4, 2026 is inconsistent with a straightforward 20-years-from-Oct. 9, 2003 reading of the §120 chain (which would end Oct. 9, 2023) and with the 2002 provisional date. The figure appears to reflect patent term adjustment and/or terminal-disclaimer effects; I did not confirm the derivation.
4. Appeal-to-IPR matching: My association of 24-1331 with IPR2022-00811 and 24-1957 with IPR2022-01364 is a well-supported timing inference, not something I confirmed from the docket itself.
5. Date discrepancy: The system context indicates 2026-09-27 while the request states April 26, 2026. This does not change any of the above, but it is worth flagging since the question asked specifically about "2026" CAFC activity.

I'll research known litigation involving US patent 8144184 across patent litigation databases.

Let me dig deeper into the specific cases asserting this patent.

Litigation Involving U.S. Patent No. 8,144,184 ("Detection and Viewing System")

Bottom line: US 8,144,184 has been litigated. The confirmed matters in which this specific patent was squarely at issue are (1) a district-court infringement suit by SB IP Holdings against Vivint in the Eastern District of Texas, and (2) two inter partes reviews at the PTAB filed by Vivint that invalidated the challenged claims, with related Federal Circuit appeals. The patent also appears in the litigation lists on its own record. Below I separate (A) matters where the '184 itself was asserted/challenged from (B) related family litigation where other patents in the same family were at issue.

Caveat up front: I could not independently verify every docket entry from PACER directly within this session. Where a source is a patent-database aggregation rather than a primary docket, I say so, and I flag facts I could not confirm.

A. Matters directly involving the '184 patent

1. SB IP Holdings LLC v. Vivint Smart Home, Inc. (infringement)

• Plaintiff: SB IP Holdings, LLC (assignee/owner of the '184)
• Defendant: Vivint Smart Home, Inc. (and later Vivint, Inc.)
• Jurisdiction: U.S. District Court for the Eastern District of Texas, Sherman Division
• Case No.: 4:21-cv-00912 (Judge Amos L. Mazzant)
• Filed: November 18, 2021 (some sources give Nov. 17, 2021)
• Patents asserted (six, of which the '184 is one): US 8,144,184; US 8,139,098; US 8,164,614; US 8,154,581; US 7,193,644; and US 8,144,183.
• Status/outcome: According to PatSnap's litigation summary (citing PACER for 4:21-cv-00912), the action was resolved by an order stating: "ORDERED that this action is dismissed with prejudice in its entirety." Source: https://www.patsnap.com/fr/resources/blog/litigation/sb-ip-holdings-v-vivint-smart-home-smart-home-video-patent-dispute-patsnap/
  • Note: In the broader SB IP v. Vivint dispute, Law360 reported an October 24, 2023 Texas jury verdict of $45.4 million for willful infringement of "a pair of patents," with a subsequent August 26, 2024 ruling declining to enhance the award. I could not confirm from the available sources which two patents supported that verdict, so I cannot state that the '184 was one of them. Treat that verdict as belonging to the SB IP/Vivint dispute but with unverified patent identification. Source: https://www.law360.com/cases/5fb44dcd5b19ca18fdcbab90/articles

2. Vivint, Inc. v. SB IP Holdings LLC — IPR2022-00811 (PTAB)

• Petitioner: Vivint, Inc.
• Patent Owner: SB IP Holdings, LLC
• Jurisdiction: USPTO Patent Trial and Appeal Board
• Proceeding No.: IPR2022-00811
• Filed: April 29, 2022
• Patent challenged: U.S. Patent No. 8,144,184
• Institution decision: November 16, 2022
• Outcome: Final Written Decision dated November 3, 2023 determining all challenged claims unpatentable (35 U.S.C. § 318(a)).
• Sources: https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2022-00811 ; https://www.docketalarm.com/search/?q=patent%3A%288144184%29

3. Vivint, Inc. v. SB IP Holdings — IPR2022-01364 (PTAB)

• Petitioner: Vivint, Inc.
• Patent Owner: SB IP Holdings, LLC
• Jurisdiction: USPTO Patent Trial and Appeal Board
• Proceeding No.: IPR2022-01364
• Filed: August 19, 2022
• Patent challenged: U.S. Patent No. 8,144,184
• Institution decision: April 17, 2023
• Outcome: Final Written Decision dated April 10, 2024 determining all challenged claims unpatentable (35 U.S.C. § 314). Termination date listed as April 10, 2024.
• Sources: https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2022-01364 ; https://portal.unifiedpatents.com/ptab/case/IPR2022-01364 ; https://www.docketalarm.com/search/?q=patent%3A%288144184%29

4. Related Federal Circuit appeals on the patent record

The patent's own Google Patents record lists two appeals at the U.S. Court of Appeals for the Federal Circuit, both tied to this patent family:

• CAFC No. 24-1331 (https://portal.unifiedpatents.com/litigation/Court%20of%20Appeals%20for%20the%20Federal%20Circuit/case/24-1331)
• CAFC No. 24-1957 (https://portal.unifiedpatents.com/litigation/Court%20of%20Appeals%20for%20the%20Federal%20Circuit/case/24-1957)

These are almost certainly the appeals from the two IPR Final Written Decisions above (both issued to the same parties), but the record does not expressly map each docket number to each IPR, so I cannot confirm the pairing with certainty.

5. Matters listed on the patent's own litigation record

Google Patents' "Family has litigation" section for US 8,144,184 additionally lists, as family litigation events:

• North Carolina Western District Court, Case No. 3:14-cv-00526 — flagged "Critical." This corresponds to Eyetalk365, LLC v. CPI Security Systems, Inc., filed September 22, 2014 (patent: source https://dockets.justia.com/docket/north-carolina/ncwdce/3:2014cv00526/76582; litigation URL https://portal.unifiedpatents.com/litigation/North%20Carolina%20Western%20District%20Court/case/3%3A14-cv-00526).
• California Central District Court, Case No. 8:22-cv-00034 — Vivint Inc. v. SB IP Holdings LLC (declaratory judgment action, filed January 7, 2022, closed/transferred July 27, 2022 to E.D. Tex. 4:21-cv-00912).
• Texas Eastern District Court, Case No. 4:22-cv-00648 — Vivint, Inc. v. SB IP Holdings LLC.
• The two PTAB IPRs and two CAFC appeals noted above.

B. Related family litigation (where the '184 was NOT itself asserted)

These are part of the same patent family/patent-owner dispute but, based on the sources, asserted other patents — not the '184:

• ITC Investigation No. 337-TA-1242, Certain IP Camera Systems Including Video Doorbells and Components Thereof. Complainants: SkyBell Technologies, Inc.; SB IP Holdings, LLC; and Eyetalk365, LLC. Respondents: Vivint Smart Home, Inc.; SimpliSafe, Inc.; and Arlo Technologies Inc. Asserted patents were US 9,432,638; 9,485,478; 10,097,796; 10,097,797; 10,200,660; 10,523,906; and 10,674,120 — not the '184. Terminated November 10, 2021, the Commission affirming an initial determination that all asserted claims were invalid. Sources: https://www.govinfo.gov/content/pkg/FR-2021-11-17/pdf/2021-25061.pdf ; appeal: SkyBell Techs. et al. v. ITC, CAFC No. 2022-1354.
• SB IP Holdings LLC v. Vivint Smart Home, Inc., No. 4:20-cv-00886 (E.D. Tex.) — asserted the later "Skybell Patents" ('030, '638, '478, '284, '323, '290, '120).
• Declaratory judgment actions by Vivint: Vivint, Inc. v. SBIP Holdings, LLC, No. 8:22-cv-00033 (C.D. Cal.); and SB IP Holdings LLC v. Vivint Smart Home, Inc., No. 2:21-cv-09472 (C.D. Cal.) (involving Vivint's counterclaims on US 6,748,343 and US 7,956,739).
• SimpliSafe v. SkyBell Technologies, Inc., SB IP Holdings, LLC, and EyeTalk365, LLC, No. 1:20-cv-12288 (D. Mass.) (DJ action).
• Arlo Technologies, Inc. v. SkyBell Technologies, Inc., SB IP Holdings, LLC, and EyeTalk365, LLC, No. 3:21-cv-00218 (S.D. Cal.) (DJ action).
• Earlier Eyetalk365 actions (W.D.N.C.): Eyetalk365, LLC v. Protect America, Inc., No. 3:14-cv-00525; Eyetalk365, LLC v. Zmodo Technology Corp. Ltd., No. 3:16-cv-00789; Eyetalk365, LLC v. SkyBell Technologies, Inc., Nos. 3:16-cv-00702 and 3:15-cv-00492. I could not confirm which specific family patents were asserted in each of these.

Summary table (matters where the '184 was directly at issue)

Confidence / limitations

• High confidence: The two PTAB IPRs (IPR2022-00811, IPR2022-01364) each challenged the '184 and resulted in final decisions of all challenged claims unpatentable.
• Moderate confidence: The 4:21-cv-00912 E.D. Tex. suit asserted the '184 among six patents; the "dismissed with prejudice" disposition comes from an aggregated litigation summary rather than a docket I retrieved directly.
• Low/unverified: Whether the October 2023 $45.4M jury verdict in the SB IP/Vivint dispute rested on the '184, the exact plaintiff/defendant alignment on the two CAFC appeals, and which specific patents were asserted in the older Eyetalk365 W.D.N.C. suits.

If you need confirmation of the docket-level details, the authoritative sources to pull next are PACER for E.D. Tex. 4:21-cv-00912 and 4:22-cv-00648, the PTAB P-TACTS portal for IPR2022-00811 and IPR2022-01364, and the CAFC dockets for 24-1331 and 24-1957.

I'll start by reconciling the "no PTAB activity" block against the patent page itself, which lists two PTAB cases, then pull claim-level outcomes.

Two IPRs are confirmed by the patent page itself and by search. Let me pin down the claim-level outcomes, panels, grounds, and the appeals.

Now I need the claim-level dispositions — especially the exact claim sets — and the panel/grounds for both FWDs.

Source-conflict flag (read first)

The structured "PTAB proceedings on file" block states the USPTO ODP API returns no AIA trial proceedings for US 8,144,184. That is contradicted by the patent's own Google Patents record, which lists two PTAB cases marked "Final Written Decision":

"PTAB case IPR2022-01364 filed (Final Written Decision)" and "PTAB case IPR2022-00811 filed (Final Written Decision)" — https://patents.google.com/patent/US8144184/en

Per my operating rules the patent page controls over the aggregator block, and both proceedings are independently corroborated by PTAB E2E filings (ptacts.uspto.gov/ptacts/public-informations/petitions/1549424), DocketAlarm's PTAB dockets, and the Federal Circuit's consolidated dismissal order. I am therefore reporting two proceedings on file, not zero. The ODP block should be treated as a stale/missed-ingest artifact for this patent — flagging it as instructed. Neither proceeding number below is invented; both appear verbatim in the patent record.

Proceedings overview

Two AIA trial proceedings are on file — both IPRs filed by Vivint, Inc. against SB IP Holdings LLC — and both ended in Final Written Decisions holding every challenged claim unpatentable; both appeals were voluntarily dismissed on 2025-07-10, leaving the cancellation holdings in place: 2 claims-invalidated, 0 active, 0 claims sustained, 0 institution denials, 0 CBM/PGR. Bottom line for a defendant: claims 1–13 and 16–20 were canceled in IPR2022-00811 and claims 14–15 in IPR2022-01364 — if a demand letter cites US 8,144,184, the assertion rests on canceled claims. The only caveat is that the ODP block says "no proceedings," so confirm the certificates of cancellation issued before you rely on this in a brief.

IPR2022-00811 — Vivint, Inc. v. SB IP Holdings LLC

• Type: Inter Partes Review (35 U.S.C. §§ 311–319)
• Filed: 2022-04-29 (PO Preliminary Response 2022-08-19)
• Status: Final Written Decision — verbatim document title: "Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a)", dated 2023-11-03 (Paper 16). Plain English: every claim Vivint challenged was canceled; nothing was sustained.
• Judge panel: Jameson Lee, Karl D. Easthom, Jon M. Jurgovan (APJs); Easthom authored the FWD. Panel confirmed by the Board's 2023-07-28 Order Conduct of Proceeding in IPR2022-00811/-00813 and by the -01364 FWD's citation to the 811 FWD.
• Petition grounds (as corrected at the Board's 2023-01-19 order; Petitioner's Corrected Grounds of Unpatentability filed 2023-01-26):

The Patent Owner's Response and Petitioner's Reply also address Grounds 1–10, including grounds built on Naidoo-068 (US 8,520,068) combined with Menard for claims 2, 8, 10 and 20. The "corrected" table collapses those into the five reference groupings above — the numbering inconsistency is in the record, not in my summary. No § 112 grounds.

• Institution decision: Instituted 2022-11-16 (Decision Granting Institution of Inter Partes Review, 35 U.S.C. § 314). The Board found the Vaios-based § 102/§ 103 grounds and the Naidoo/MacCormack/Krzyzanowski obviousness grounds sufficient at the threshold; the panel's reasoning is in the institution decision itself, which I have not read line-by-line.
• Final Written Decision (2023-11-03): all challenged claims — 1–13 and 16–20 — unpatentable. No claim was held patentable. At claim-level: claims 1, 19 and 20 (independents per the briefing) went down on the Vaios-centric grounds; dependent claims 2–13 fell with them; the Naidoo-091 ground took claims 6, 16, 17 and 19. The FWD title itself is the disposition; I did not retrieve the full claim-by-claim text, so I am not quoting the panel's reasoning and am not representing that any claim survived.
• Settlement / termination: The proceeding ran to a FWD; no adverse-judgment termination. The later voluntary appeal dismissal (below) is consistent with a global resolution of the Vivint–SB IP dispute, but terms are not public — treat any settlement amount as confidential/unknown.
• Appeal: Yes. Patent Owner's Notice of Appeal 2024-01-04; docketed at the Federal Circuit as 24-1331 on 2024-01-08 (https://dockets.justia.com/docket/circuit-courts/cafc/24-1331). Consolidated with 24-1307 (lead), 24-1366, 24-1874, 24-1957 and 24-2012, covering PTAB Nos. IPR2022-00811, -00812, -00813, -01352, -01364 and -01365. Disposition: dismissed — "Upon consideration of the parties' joint stipulations of voluntary dismissal of the above-captioned appeals pursuant to Federal Rule of Appellate Procedure 42(b), IT IS ORDERED THAT: (1) The appeals are dismissed. (2) Each side shall bear its own costs." Order dated 2025-07-10, mandate issued. See https://www.cafc.uscourts.gov/opinions-orders/24-1271.ORDER.7-10-2025_2542531.pdf and https://www.courtlistener.com/opinion/[10626668](/patent/10626668)/sb-ip-holdings-llc-v-vivint-inc/. Because the appeal was dismissed without an opinion and without vacatur, the FWD's cancellation holdings stand — but note there is no Federal Circuit affirmance on the merits to cite.
• Defensive value: The strongest single fact in the file. Claims 1–13 and 16–20 of the '184 are canceled. Note that SB IP's own infringement contentions in E.D. Tex. asserted claims 1–9, 11–15 and 20 of the '184 — every asserted claim is covered by this FWD or the -01364 FWD. Any infringement theory built on those claims is dead on arrival.

IPR2022-01364 — Vivint, Inc. v. SB IP Holdings LLC

• Type: Inter Partes Review
• Filed: 2022-08-19
• Status: Final Written Decision — verbatim document title: "JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable 35 U.S.C. § 314", dated 2024-04-10 (Paper 18). (The title recites § 314; the body relies on § 318(a).)
• Judge panel: Jameson Lee, Karl D. Easthom, Jon M. Jurgovan; Easthom authored. Per the FWD: "The parties did not request an oral hearing and the Board held no hearing."
• Petition grounds: A challenge to dependent claims 14 and 15 only, which "depend from unchallenged claim 1," supported by the Declaration of Dr. Bertrand Hochwald (Ex. 1034). Statutory basis and the specific reference combination are not stated in the excerpts I retrieved — verify the exact § 102/§ 103 ground in the FWD before quoting it. Patent Owner relied on the Declaration of Dr. Robert Akl (Ex. 2012). (Claim 1 was deliberately not re-challenged here; it was already the subject of IPR2022-00811.)
• Institution decision: Instituted 2023-04-17; Patent Owner filed no preliminary response, so the Board's threshold analysis was unrebutted.
• Final Written Decision (2024-04-10), verbatim: "For the reasons set forth in this Final Written Decision pursuant to 35 U.S.C. § 318(a), we determine that Petitioner demonstrates by a preponderance of evidence that challenged claims 14 and 15 of the '184 patent are unpatentable." Both challenged claims canceled; nothing sustained.
• Settlement / termination: FWD issued; no adverse-judgment or settlement termination in the PTAB.
• Appeal: Yes — Patent Owner's Notice of Appeal filed 2024-06-12, docketed as 24-1957, consolidated into the same Federal Circuit cluster (24-1307 lead). Dismissed 2025-07-10 under FRAP 42(b) on the parties' joint stipulation, each side bearing its own costs. Same order and links as above.
• Defensive value: This FWD closes the last gap in the asserted claim set. Together with -00811, the entire set of claims SB IP actually asserted against Vivint (1–9, 11–15, 20) has been held unpatentable — an unbroken string of adverse PTAB outcomes for the patent owner on this patent.

Claim-count caveat (do not overlook). The -01364 FWD's related-matters footnote describes the 811 FWD as determining unpatentable "all challenged claims, claims 1–13 and 16–21." The Petition, Patexia's case record, and the corrected grounds all say the -00811 challenge was claims 1–13 and 16–20. If the patent in fact contains a claim 21, it was not challenged and my "all claims canceled" statement is limited to claims 1–20. I could not verify the '184's total claim count within this task. Check the patent's claim listing and the certificates of cancellation.

Strategic summary

Canceled vs. sustained vs. untested. Claims 1–13 and 16–20 are canceled per the IPR2022-00811 FWD (2023-11-03); claims 14–15 are canceled per the IPR2022-01364 FWD (2024-04-10). No claim of the '184 was sustained in either IPR. Assuming the patent has 20 claims, zero claims remain — there is no surviving claim set to assert. If the '184 has a claim 21, that claim is untested and would be the sole live target (and note it was never asserted by SB IP against Vivint). One bookkeeping anomaly: Google Patents still shows the '184 as "Active - Reinstated," with an adjusted expiration of 2026-10-04 — that field tracks maintenance-fee and term events, not claim-level IPR outcomes, and it should not be read as evidence that any claim survived. Confirm the certificates of cancellation issued on the PTAB E2E record.

Estoppel landscape. Under § 315(e)(1) (Office) and § 315(e)(2) (district court), Vivint and its privies may not raise, in any forum, any ground they raised or reasonably could have raised in these two IPRs — that estoppel attaches claim-by-claim as to claims 1–20. For a new defendant being asserted today, that estoppel does not run against you: the PTAB record is a public, pre-vetted prior-art roadmap you can use for free — Vaios (US 6,271,752) as primary reference, plus Menard (WO 01/93220), Saylor (US 6,661,340), Naidoo-091 (US 6,658,091), Naidoo-068 (US 8,520,068), MacCormack and Krzyzanowski. If any '184 claim survived, a fresh IPR on new art remains available to a non-privy petitioner (§ 315(e) is petitioner-specific), subject to § 325(d) discretion. In the related-IPR hearing record, the Board and counsel wrestled expressly with § 315(e)(1)/§ 325(e) and with whether a prior FWD's findings on claim 1 control later challenges to dependent claims 14–15 — a transcript excerpt from the Vivint/SB IPR cluster (it appears in the -01365 record and is not the -01364 hearing, since that case had no hearing) shows the panel explaining that "you can't just look at 14 and 15 in a vacuum. You have to go look at claim 1." Useful color on how the Board handles claim-dependency in serial IPRs, but do not cite it as part of the -01364 record.

Pattern signals. This was a single-petitioner campaign, not a defensive-aggregator one. Vivint, Inc. (with Vivint Smart Home, Inc. as parent/holding company) filed a coordinated burst of petitions in April and August 2022 against the whole asserted family: IPR2022-00810, -00811, -00812, -00813, -00814, -01352, -01364 and -01365, covering the '098, '184, '183, '581 and '614 patents. No defensive aggregator is in the chain — the "Unified Patents PTAB Data" string on the Google Patents page is a CC-BY data-license attribution to Unified Patents as the metadata provider, not a petitioner. The patent owner (SB IP Holdings LLC, successor to EyeTalk365/Revolutionary Concepts; secured creditor Star Mountain Diversified Credit Income Fund III, LP) did pursue PTAB appeals aggressively — it noticed appeal in at least eight proceedings, then abandoned them all by joint stipulation on 2025-07-10, contemporaneous with the 2025-08-11 dismissal with prejudice of the E.D. Tex. case (SB IP Holdings LLC v. Vivint Smart Home, Inc., No. 4:21-cv-00912). Read together, that pattern — FWD losses, then stipulated dismissal of every appeal plus a with-prejudice district-court exit — looks like a global resolution in which the patent owner walked away.

Recommended next steps

1. If you are a defendant and the patent has been asserted: it has, but on canceled claims. Quote the dispositions. (a) IPR2022-00811 FWD, 2023-11-03, disposition title: "Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a)" — https://www.docketalarm.com/cases/PTAB/IPR2022-00811/ (PTAB E2E: https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1549424](/patent/1549424)). (b) IPR2022-01364 FWD, 2024-04-10: "we determine that Petitioner demonstrates by a preponderance of evidence that challenged claims 14 and 15 of the '184 patent are unpatentable" — https://www.docketalarm.com/cases/PTAB/IPR2022-01364/Vivint_Inc._v._SB_IP_Holdings/docs/04-10-2024-Board/Final_Written_Decision__original-18-Final_Written_Decision__JUDGMENT_Final_Written_Decision_Determining_All_Challenged_Claims_Unpatentable_35_USC_%C2%A7_314.pdf. Then cite the Federal Circuit order dismissing the appeals without vacatur: https://law.justia.com/cases/federal/appellate-courts/cafc/24-1271/24-1271-2025-07-10.html; https://www.courtlistener.com/opinion/10626668/sb-ip-holdings-llc-v-vivint-inc/.
2. Verify the books before you file. Pull the PTAB E2E certificates of cancellation for claims 1–13 and 16–20 (from -00811) and 14–15 (from -01364); confirm the '184's total claim count (the 20-vs-21 discrepancy) and confirm no reissue, reexam, or continuation has re-presented equivalent claims. A canceled claim cannot be asserted, but confusingly similar continuation claims can — check the family.
3. No trial-stage milestones remain. Both trials closed with FWDs, and the appeals are dismissed and mandated; there is no institution deadline, hearing, or statutory 1-year FWD clock left running on either proceeding. Treat the '184 as administratively over.
4. Shift focus to the siblings. SB IP asserted six patents against Vivint: US 8,139,098; US 8,144,183; US 8,144,184; US 8,154,581; US 8,164,614; and US 7,193,644. The '184 is the one with confirmed, final, all-claims-canceled outcomes. I have not verified the outcomes of the sibling IPRs (IPR2022-00810, -00812, -00813, -00814, -01352, -01365) and will not guess at them — run the same E2E pull for each. If your demand letter names only the '184, the troll has no case; if it names the siblings, the analysis starts over.
5. Absence-of-activity note. Because the ODP block reports no proceedings, do not rely on ODP alone to establish that "no IPR was ever filed" — that representation would be wrong here, and the patent's own page refutes it. Where you need a clean evidentiary hook, use the FWDs and the Federal Circuit order, not the aggregator field.

I'll research the assignment chain and correspondent data before drafting.

Assignment & Ownership Analysis — US 8,144,184 B2 ("Detection and viewing system")

Important sourcing caveat (read first): The assignment reel/frame numbers and correspondent of record for each 8,144,184-specific recording were not surfaced in any source available to me (Google Patents legal-events feed, the patent text itself, and the public litigation/SEC record). Google Patents shows the conveyance events with dates and types but omits reel/frame and correspondent. I have reconstructed the chain from those recorded events and have flagged which specific fields I could not verify rather than filling them in. Every entry below should be confirmed at USPTO Assignment Center / assignment.uspto.gov before being relied on in a prosecution or litigation context.

Inventors

Ronald Carter (a/k/a Ronald E. Carter), Matthews, North Carolina — sole named inventor.

• Employer at filing: Revolutionary Concepts, Inc. Carter is the founder/owner of the company. Per the North Carolina Court of Appeals decision Revolutionary Concepts v. Clements Walker PLLC (2013), Carter assigned all rights and interest in the invention to a Nevada corporation he founded, Revolutionary Concepts, in 2006 — i.e., before this continuation was filed (2007-10-30) and long before issuance (2012-03-27). That 2006 inventor→company assignment is the one Google Patents records on 2012-02-15 as "Assigned to REVOLUTIONARY CONCEPTS, INC., assignor CARTER, RONALD."
• Unusual patterns:
  • There is no multi-inventor departure pattern — Carter is the sole inventor and never left the portfolio. In fact, contrary to the "inventor departs before fire-sale" tell, Carter has remained continuously attached to the asset and is still filing in this family under successor/adjacent entities (patents-review.com shows Carter filings assigned to Eyetalk365 (Cornelius, NC), 1AHEAD Technologies, SB IP Holdings (Irvine, CA), Re-Volt EV LLC, IQmagine, and 1HEAD Technologies, with publications as recent as 2025-10-23).
  • Prosecution dispute: Carter personally sued his original prosecution firm (Dougherty & Clements, later Clements Walker) for malpractice, alleging they failed to file an international application and let the U.S. application publish. The NC Court of Appeals (2013) let Carter (but not the company) pursue the claim. This is relevant background on the strength/coverage of the original family.

Original assignee

Revolutionary Concepts, Inc. — the entity named on the issued patent (the "current assignee" field on the face of the patent later shows SB IP Holdings LLC).

• Corporate history: Two entities share the name. RCI-North Carolina was formed by Carter; RCI-Nevada was the entity to which Carter assigned rights in 2006. The NC entity was subsumed into the Nevada corporation in 2008 (per the NC Court of Appeals decision). The patent's original assignee of record is Revolutionary Concepts, Inc. (Nevada), publicly traded on OTC Pink as REVO.
• Primary line of business: Design/development of the "EyeTalk" Communicator — mobile video, remote smart-camera security technology (company's own description). It styled itself a patent-holding/licensing story, not a product manufacturer.
• Did it ship a product embodying the claims? No credible evidence of material commercial shipment. The company maintained an "EyeTalk for Home" / "EyeTalk Product" page (cited in later patents as downloaded May/Nov 2013 from revolutionaryconceptsinc.com), and press releases asserted commercial promise. But contemporaneous investor analysis and the SEC record characterize the company as pre-commercial; the company admitted in litigation that it had performed no market research and made no sales projections, and the patent's carrying value on its balance sheet was under $100k. Treat "shipped a product" as unclear/likely never commercialized.
• Current status: Distressed / effectively defunct. On 2015-06-17 the SEC issued an order (File No. 500-1) suspending trading in REVO, citing "questions regarding the accuracy and completeness of REVO's public filings," specifically including representations about the Eyetalk365 license and a purported "$900,000 in consideration" payment. Investor commentary describes the company as insolvent. I found no evidence of a Chapter 7/11 filing; status is best stated as trading-suspended / asset-sold / non-operating, not confirmed bankruptcy.

Assignment timeline

Reel/frame and correspondent fields could not be verified for the 8,144,184-specific recordings (see caveat above). Where a correspondent is named, it is drawn from a confirmed assignment cover sheet or the face of an issued family patent, and is annotated as such.

• 2006 (executed) / recorded 2012-02-15 — Reel not retrieved

  • Conveyance: Assignment of assignors' interest
  • Assignor: Ronald Carter
  • Assignee: Revolutionary Concepts, Inc.
  • Correspondent: not retrieved (prosecution counsel of record on the face of the patent is Gallium Law, St. Paul, MN).
  • Context: Founder→company transfer — inventor contributed the invention to his own company ahead of the 2007 continuation filing.

• 2014-09-16 (executed, effective) / recorded 2015-08-20 — Reel not retrieved

  • Conveyance: Assignment of assignors' interest (filed as an assignment although the underlying 2014 agreement is styled a License Agreement)
  • Assignor: Revolutionary Concepts, Inc.
  • Assignee: Eyetalk365, LLC (Cornelius, NC)
  • Correspondent: not retrieved.
  • Context: Transfer-to-asserter. The agreement is a 60/40 royalty-share with litigation controlled by the licensee; REVO registered it as an assignment so Eyetalk365 could sue in its own name. Investors confirmed the USPTO record shows the assignment effective 2014-09-16, matching an amendment to the REVO–Eyetalk365 agreement executed the same day.

• 2018-01-08 — Reel not retrieved

  • Conveyance: License
  • Assignor: Eyetalk365, LLC
  • Assignee: SkyBell Technologies, Inc.
  • Correspondent: not retrieved (family-level correspondent is Gallium/Schwie Law — see below).
  • Context: License into the asserting affiliate (SkyBell), part of consolidating the family under the SkyBell/SB IP structure.

• 2018-10-05 — Reel not retrieved

  • Conveyance: Security interest
  • Assignor: SkyBell Technologies, Inc.
  • Assignee: Alarm.com Incorporated
  • Correspondent: not retrieved.
  • Context: Securitization — collateral encumbrance over the SkyBell IP.

• 2019-07-23 — Reel not retrieved

  • Conveyance: Release by secured party
  • Assignor: Alarm.com Incorporated
  • Assignee: SkyBell Technologies, Inc.
  • Correspondent: not retrieved.
  • Context: Securitization unwind — release of the Alarm.com lien.

• 2019-12-30 — Reel not retrieved

  • Conveyance: Assignment of assignors' interest
  • Assignor: Revolutionary Concepts, Inc.
  • Assignee: Eyetalk365, LLC
  • Correspondent: not retrieved.
  • Context: Clean-up / confirmatory re-recording. Same assignor→assignee pair as 2014–2015; it reads as a correction or expanded-bundle recording of the REVO→Eyetalk chain five years later, likely ahead of renewed enforcement.

• 2021-05-18 — Reel not retrieved

  • Conveyance: Assignment of assignors' interest
  • Assignor: Eyetalk365, LLC
  • Assignee: SB IP Holdings LLC (Irvine, CA)
  • Correspondent: not retrieved.
  • Context: Transfer-to-asserter / entity consolidation — the family is consolidated into the SB IP Holdings holding company that then became the named plaintiff.

• 2022-08-05 — Reel not retrieved

  • Conveyance: Security interest
  • Assignor: SB IP Holdings LLC, SkyBell Technologies IP, LLC, and SkyBell Technologies, Inc.
  • Assignee: Star Mountain Diversified Credit Income Fund III, LP
  • Correspondent: not retrieved.
  • Context: Securitization / litigation financing — an encumbrance across the SkyBell family by a credit fund, ~3 months after the 2022 district-court complaints.

Correspondent observation (partial but material): I could confirm a recurring prosecution/recording firm on this family even without the 8,144,184 reels:

• The face of US 8,144,184 lists Gallium Law (St. Paul, MN) as the attorney/agent firm.
• A recorded SkyBell assignment in the same portfolio family — Reel 051600 / Frame 0747 (executed 2019-10-10, recorded 2020-01-23, from inventor Joseph Frank Scalisi to SkyBell Technologies, Inc.) — was filed by correspondent Schwie Law, LLC, 445 Minnesota St., Suite 1500, St. Paul, MN 55101, phone 651-428-9828, e-mail wes@schwielaw.com, submitter Wesley Schwie.
• Later SkyBell-family patents list "Gallium Law; Wesley Schwie, Esq." as attorney of record (e.g., US 11,343,473 B2; US 11,388,373 B2).

So the same St. Paul shop (Gallium Law / Schwie Law, Wesley Schwie) recurs across the prosecution and the recorded assignments of this patent family. Flag: this is a genuine recurrence, not a one-off appearance — but note the constraint in your brief: many firms do both operating-company and NPE work, and I have not confirmed that Schwie/Gallium appears as correspondent on any specific 8,144,184 reel. Treat it as a recurrence on the family, pending reel-level verification.

Timeline diagram

timeline
    title Ownership of US 8144184
    2002 : Provisional filed by Ronald Carter
    2003 : Nonprovisional filed
    2006 : Carter assigns rights to Revolutionary Concepts
    2007 : Continuation filed
    2012 : Patent issued
         : Carter assignment recorded
    2014 : Eyetalk365 assignment effective
         : Eyetalk365 sues three defendants
    2015 : Eyetalk365 assignment recorded
         : SEC suspends REVO trading
    2018 : SkyBell receives license from Eyetalk365
         : Alarm.com records security interest
    2019 : Alarm.com releases security interest
         : Eyetalk365 assignment re-recorded
    2021 : SB IP Holdings becomes assignee
    2022 : Star Mountain records security interest
         : ITC complaint 337-TA-1242 filed
    2023 : PTAB invalidates claims in IPR2022-00811

NPE / troll-pattern signals

1. Shell-entity transfer — PRESENT. The family moved from an operating-oriented public company (Revolutionary Concepts, Inc.) to a licensing-only LLC (Eyetalk365, LLC, Cornelius NC — recorded 2015-08-20 and again 2019-12-30) and then to a holding LLC (SB IP Holdings LLC, Irvine CA — recorded 2021-05-18). Evidence beyond naming: Eyetalk365 is described in REVO's own press materials as a "global licensee" whose job is to "market and exploit" the patents and sue infringers in its own name for a 60/40 split, and it did exactly that (first suits filed 2014-09-22). SB IP Holdings holds no product line; SkyBell's products are asserted as the domestic-industry product prong while SB IP Holdings is the asserting titleholder. Caveat: I did not verify a registered-agent-only address or single-member DE/TX registration from the sources available, so the "shell" call rests on the licensing-only function, not on corporate-registration forensics.

2. Known asserter in the chain — PRESENT (as a serial plaintiff, not a listed classic NPE). Eyetalk365, LLC, SB IP Holdings LLC, and SkyBell Technologies, Inc. appear as the certified Complainants in ITC Investigation 337-TA-1242 (instituted 2021-01-28; complaint filed 2020-12-18), and Eyetalk365 filed a documented series of district-court infringement suits against SkyBell and multiple non-parties in W.D.N.C., D. Del., and D. Nev. (per the ITC complaint's related-litigation recital). They do not match any name on your classic list (Acacia, Marathon, IV, Wi-LAN, etc.), so this is a "high-frequency plaintiff surfaced by the litigation record" finding, not a name-match to a published NPE roster.

3. Repeat correspondent across the chain — PRESENT (moderate; family-level). Gallium Law / Schwie Law (Wesley Schwie), St. Paul, MN appears both as the attorney of record on the face of US 8,144,184 and as correspondent on the recorded SkyBell assignment at Reel 051600 / Frame 0747 (recorded 2020-01-23), and as attorney of record on later family patents (US 11,343,473; US 11,388,373). Verify at reel level: I could not confirm which 8,144,184-specific reels carry this correspondent.

4. Cascading transfers — PRESENT (moderate). Recorded transfers run Eyetalk365 (2015-08-20) → SkyBell license (2018-01-08) → Alarm.com security interest (2018-10-05) → Alarm.com release (2019-07-23) → Eyetalk365 assignment (2019-12-30) → SB IP Holdings (2021-05-18) → Star Mountain security interest (2022-08-05). That is five recorded conveyances in roughly 4.5 years (2018–2022) through affiliated entities. The 2019-12-30 → 2021-05-18 step is ~17 months, inside the 24-month window; the 2018 cluster is same-entity securitization, so I would not over-read it.

5. Pre-litigation transfer — PRESENT (strongest signal). The Eyetalk365 assignment is documented as effective 2014-09-16 (matching the executed amendment of the REVO–Eyetalk365 agreement), and Eyetalk365 filed its first three infringement suits — 3:14-cv-525 (Protect America), 3:14-cv-526 (CPI Security), 3:14-cv-527 (LiveWatch) in W.D.N.C. — on September 22, 2014, six days later. That is a textbook arrange-the-chain-to-assert pattern (clean title + standing). Note the recording date lags (2015-08-20); the execution/effective date is what controls this signal.

6. Bankruptcy fire-sale — NOT PRESENT (as to a formal proceeding). REVO was financially distressed and had trading suspended by the SEC (2015-06-17, File No. 500-1), and the patent was carried at a nominal value, but I found no evidence of a Chapter 7/11 case or a court-supervised patent sale. The asset moved via the Eyetalk365 agreement, not a bankruptcy estate.

7. Privateering — PRESENT. Revolutionary Concepts (an operating/public company promoting "EyeTalk") conveyed title to Eyetalk365, a licensing vehicle, under a royalty-share where the licensee controls litigation and remits 40% of recoveries; REVO publicly framed the suits as vindicating "REVO's patents." That is an operating originator using an NPE conduit to monetize against third parties, with the originator sharing the upside.

8. Defensive aggregator — NOT PRESENT. The chain does not terminate at RPX, AST, LOT, Unified Patents, or OIN. It terminates at SB IP Holdings LLC, with a credit-fund security interest (Star Mountain, 2022-08-05), and the holders are actively asserting (ITC 337-TA-1242; E.D. Tex. 4:20-cv-00886; C.D. Cal. 8:22-cv-00033/34; PTAB invalidated the claims in IPR2022-00811, Final Written Decision 2023-11-03, with appeals to the Federal Circuit dismissed 2025-07-10). No neutralization by a defensive aggregator.

Verdict

NPE — high confidence. The chain shows an operating/public originator (Revolutionary Concepts, Inc.) transferring title to a licensing-only LLC (Eyetalk365, recorded 2015-08-20, effective 2014-09-16), which filed its first infringement suits six days after the effective assignment date (2014-09-22), under a 60/40 monetization split rather than product sales. Title then cascaded through affiliated asserting entities (Eyetalk365 re-recording 2019-12-30 → SB IP Holdings 2021-05-18) and was encumbered by a credit fund (Star Mountain, 2022-08-05), with a recurring St. Paul correspondent (Gallium/Schwie Law) visible across the family. That is at least three strong signals — transfer-to-asserter, pre-litigation transfer, and privateering — plus entity/plaintiff and cascading-transfer supporting signals.

Verification links:

• USPTO Assignment Center: https://assignmentcenter.uspto.gov/
• USPTO Patent Assignment Search (legacy index), patent-number query: https://assignment.uspto.gov/patent/index.html
• Google Patents legal events for US 8,144,184: https://patents.google.com/patent/US8144184/en
• ITC 337-TA-1242 institution (Complainants = SkyBell, SB IP Holdings, Eyetalk365): https://www.usitc.gov/press_room/news_release/2021/er0125ll1706.htm
• PTAB IPR2022-00811 final decision materials: https://portal.unifiedpatents.com/ptab/case/IPR2022-00811

Remaining unverified fields (recommend pulling directly at Assignment Center): reel/frame for each 8,144,184 recording, the recorded correspondent on each, and the exact execution dates for the 2018-01-08 license, the 2018/2019 Alarm.com security-interest and release, the 2019-12-30 Eyetalk365 re-recording, the 2021-05-18 SB IP Holdings assignment, and the 2022-08-05 Star Mountain security interest.

I'll research the prior-art citations on the face of US 8,144,184. Let me pull the front-page references and any examiner-cited art.

Let me pull the actual front-page citation lists from FPO and Google Patents.

Let me retrieve the patent's own front page and the FPO citation list directly.

⚠️ Sourcing caveat before the citations

I attempted to retrieve the literal front page ("References Cited") of US 8,144,184 from Google Patents, FreePatentsOnline, and uspto.report. The authoritative text supplied for this patent is truncated inside the Detailed Description and does not include the front page, and my searches returned the specification/abstract bodies but not a verbatim, complete (56) reference block. What follows therefore distinguishes carefully between:

• references I verified are cited in the '184 disclosure itself (the four U.S. patents named in the "Background of the Invention," plus the "Other References" that surfaced from FreePatentsOnline), and
• the family/forward-citation patents, which are not prior art to '184 and must not be mixed in (I flag them separately to prevent that error).

I have not fabricated a full front-page list. Where I am inferring a filing date or a §102 mapping, I say so.

Source used for the specification and the cited references: https://FreePatentsOnline.com/[8144184](/patent/8144184).html and https://patents.google.com/patent/US8144184/en

1. Prior-art patent references cited by US 8,144,184 (applicant-cited, in the Background)

The '184 specification expressly identifies these four patents as "systems for receiving a person by an occupant" and then states "a need remains for further improvement in such a system":

I could not confirm issuance-country/filing-date columns for these four from an authoritative front page; the issue dates above are those recited in the '184 and '644/'614 specifications.

2. Non-patent literature ("Other References") appearing with the patent

From the FPO record for 8144184:

• "Wireless-G Internet Video Camera — Model No. WVC54G — Send live video and audio to a web browser anywhere in the world!", LINKSYS (a division of Cisco Systems, Inc.) Product Data Sheet, © 2004.
• "Nortel Venture wired phone system," publicly accessed via the Internet on May 13, 2002.
• "Doorphone," publicly accessed via the Internet on May 13, 2002.
• "Venture Specifications," publicly accessed via the Internet on May 13, 2002.

3. ⚠️ What must not be treated as prior art (family / forward citations)

Many database pages list 7,193,644; 8,139,098; 8,144,183; 8,154,581; and 8,164,614 "next to" 8,144,184. Those are Carter family members (same inventor / shared §120 priority chain) and are citations where '184-family patents were cited by later patents — i.e., forward citations, not art against '184. Example: patents Justia page for US 10,832,543 lists "8144184 … Carter" under its own "Referenced Cited," meaning the later patent cited Carter — not the reverse.

US 7,193,644 in particular is the parent of the '184 chain (filed Oct. 9, 2003), so it is the same inventive entity and is not §102(a)/(e) art. Do not cite it as anticipating '184.

4. § 102 analysis, reference by reference

§102 framework assumed: pre-AIA statute (priority to the Oct. 15, 2002 provisional 60/418,384). Critical dates: Oct. 15, 2001 for §102(b), and the invention/priority date ~Oct. 15, 2002 for §102(a)/(e). All four patents above issued ≥ 5 years before the earliest priority date, so each is facially §102(a) and §102(b) art (assuming the claims keep the 2002 benefit).

Claim map used (from the prior section, still the operative caveat): the granted verbatim claim set was not available to me. I therefore map to the three claim families previously reconstructed — Claim Family A (system: exterior module + computerized controller + remote peripheral device), Claim Family B (two-way audio-video method), Claim Family C (method for receiving a person at an entrance) — plus the narrow claim language sourcing noted in §6 below.

4.1 U.S. 5,657,380 (Mozer) — the most relevant of the four

• Citation: U.S. Pat. No. 5,657,380, "Interactive Door Answering and Messaging Device with Speech Synthesis," Mozer; issued Aug. 12, 1997.
• What it discloses (per the patent's own text): a sensing means "such as a button or proximity sensor" recognizing a visitor; speech generation/synthesis posing prompts; record and playback of messages; interior and exterior broadcast; an RF or wire link between the interior unit and the exterior unit (i.e., wireless link); a clock for recording the time a message is recorded and verbally announcing it; door-open sensing; and an intercom feature letting the resident speak with the visitor without opening the door.
• Potentially anticipates (§102(a)/(b)): any claim of the '184 that recites only sensor-triggered detection + recorded greeting + timestamped recording + two-way audio between an interior occupant and an exterior visitor. That maps to the audio-only aspects of Claim Family B (steps (a) and the audio-only portions of step (b)) and the timestamp/recording feature of Claim Family C.
• Why it likely does not anticipate the independent claims as a whole: Mozer contains no video camera, no video streaming, and no remote peripheral device / GUI viewing, which are positive limitations of Claim Families A and C. Against those, Mozer is §103 material (a lead reference to combine), not a clean §102 anticipation.

4.2 U.S. 5,148,468 (Marrick et al.)

• Citation: U.S. Pat. No. 5,148,468, "Door Answering System," Marrick et al.; issued Sep. 15, 1992.
• Disclosure (as characterized even in the later Mozer patent): a door messaging system that records messages from visitors; expressly no intercom for the resident to speak with the visitor and no screening of a message as it is left; tape-based; requires custom wiring between interior and exterior units.
• Potentially anticipates (§102(a)/(b)): only very narrow claims to detecting a visitor at a door and recording a message. It cannot reach the wireless, camera, GUI, or remote-viewing limitations of Claim Families A/B/C. Useful primarily as §103 background art and as evidence of the state of the art.

4.3 U.S. 5,303,300 (Eckstein)

• Citation: U.S. Pat. No. 5,303,300, "Security Door Phone Device," Eckstein; issued Apr. 12, 1994.
• Disclosure: a security door-phone device providing audio communication at an entrance.
• Potentially anticipates: the broad notion of audio intercom at an entrance relevant to Claim Family B's audio path; does not reach video, wireless-network, controller-recording, or remote-GUI limitations. §103 background art.

4.4 U.S. 5,406,618 (Knuth et al.)

• Citation: U.S. Pat. No. 5,406,618, "Voice Activated, Hands Free Telephone Answering Device," Knuth et al.; issued Apr. 11, 1995.
• Disclosure: a voice-activated, hands-free telephone answering device.
• Potentially anticipates: the voice-activation / automated-answering aspects (relevant to the voice-recognition and automated-greeting features the '184 recites only as dependent/optional features). Does not reach the entrance-camera, remote-viewing, or wireless-module limitations of the independent claims. §103 background art.

4.5 Non-patent references

5. Bottom line on the most relevant prior art

• Lead reference: U.S. 5,657,380 (Mozer) — the only cited patent that discloses sensor-triggered detection, synthesized greetings, message recording (with time stamp), a wireless/RF interior↔exterior link, and two-way audio without opening the door. It is the closest art to the audio, greeting, and timestamp/recording limitations, but it lacks video, network/Internet transport, and remote-handheld GUI viewing.
• Secondary references: Marrick '468, Eckstein '300, Knuth '618 (and the 2002 Nortel/Doorphone/Venture web materials).
• On the record as retrieved, no single cited reference appears to anticipate the independent claims A/B/C as reconstructed (all of which require a camera and/or remote-GUI viewing). The realistic invalidity theory is §103 combination (e.g., Mozer in view of a network/IP video camera such as the WVC54G/Linksys art), not clean §102 anticipation.

6. Contradictions and unresolved items (flagging explicitly)

1. Claim-preamble conflict. The previously generated section reconstructed independent Claim Family A as "An audio-video communication system, comprising…". A secondary source quoting the '184 claims (an investors' message board, not an authoritative record) shows claim 1 preamble "A detection and viewing system, comprising:" with claims 16–18 depending from claim 1 (biometric authentication module; face/eye/voice/fingerprint; voice-generation apparatus) and claim 19 "A detection and viewing system, comprising: (a) a wireless device associated with a door…; (b) a sensor associated with the door for activating the camera…; … (iv) each user is authenticated based on a biometric." Source: https://investorshub.advfn.com/boards/read_msg.aspx?message_id=87724488 . This conflicts with the earlier paraphrase and with the title/abstract language; I could not reconcile it against an authoritative claim copy. If claim 1 truly begins "A detection and viewing system" and recites biometric authentication in dependents, my §102 mapping above still holds at the family level, but the exact antecedent wording must be pulled from USPTO PatentCenter before being relied upon.
2. Front-page completeness. I could not retrieve the complete (56) "U.S. Patent Documents"/"Foreign Patent Documents" block of '184; additional examiner-cited references (including U.S. application publications and any foreign art) may exist beyond the four patents and four non-patent items above. Treat this list as partial and verified-only, not exhaustive.
3. PTAB art not included. The operative invalidity art against '184 is more likely the grounds in IPR2022-00811 and IPR2022-01364 (both Final Written Decisions finding "all challenged claims unpatentable," per the earlier section). I did not retrieve those petitions' specific prior-art combinations in this pass, so they are not reflected in the §102 table above.
4. Date artifacts. The Linksys (© 2004) reference post-dates the Oct. 15, 2002 priority date — a material §102 limitation, not an error in the citation.
5. No auto-correction applied. Patent numbers (5,148,468 / 5,303,300 / 5,406,618 / 5,657,380 / 7,193,644 / 8,139,098 / 8,144,183 / 8,154,581 / 8,164,614) and dates are reported literally as found.

I'll ground the §103 analysis in the actual prior-art record. Let me pull the IPR grounds (which found the challenged claims unpatentable) and verify the references the patent itself cites.

I have the IPR record now. Let me pin down the exact prior-art reference identities (Vaios, Menard, Naidoo, Saylor, Schnell, Choi, Klein) so I don't misattribute them.

Obviousness Analysis of U.S. Patent No. 8,144,184 under 35 U.S.C. § 103(a)

Note on the prior-art record used. The fetched Google Patents page for US 8,144,184 does not contain a "References Cited" list — the only prior-art content on the page itself is the Background of the Invention, which names four U.S. patents (see §2 below). I therefore supplement the page's own prior art with the prior art actually applied against the '184 claims at the PTAB, which is the strongest objective evidence of what a person of ordinary skill in the art ("POSITA") would have found in the field as of the 2002–2003 priority date. Because the '184 claims priority to Oct. 15, 2002, pre‑AIA § 103(a) governs.

1. Legal framework applied

• Graham v. John Deere Co., 383 U.S. 1 (1966): scope/content of the prior art; differences between the prior art and the claims; level of ordinary skill; objective indicia.
• KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007): a combination of familiar elements according to known methods is obvious when it yields no more than predictable results; motivation may come from the references themselves, the knowledge of a POSITA, or the nature of the problem; a POSITA is a person of ordinary creativity, not an automaton.
• Reasonable expectation of success and teaching away are the two defenses that can defeat an otherwise sound combination (Intelligent Bio-Systems, DePuy Spine, Galderma).
• Where a patent owner's motivation rebuttal rests solely on "the result of the combination" or on hindsight, it fails (In re Sang Su Lee; DSS Tech. Mgmt. v. Apple; One World Techs.).

2. The '184 claims to be analyzed (reconstructed — see caveat)

⚠️ Consistent with the earlier-generated "Patent summary," the verbatim claim columns for the '184 were not in the authoritative text supplied. From the PTAB record I can now substantially improve the earlier reconstruction:

🔴 Contradiction flagged (do not auto-correct): the earlier "Patent summary" listed three independent claims (a system claim, a two‑way method claim, and a "receiving a person" method claim). That mapping came from the specification's Summary of the Invention "aspects," which do not correspond one-to-one with granted claim numbering. The PTAB record instead shows claim 1 and claim 19 independent, with 1–18 and 20–21 dependent. Separately, Patent Owner's Response states "Claim 1 is directed at a 'method for receiving a person at an entrance'," while the petition quotes show claim 1 reciting a "plurality of peripheral devices," which is apparatus language. The two cannot both be right. I could not resolve it from the record; treat claim 1's exact statutory category as unverified.

3. Prior art available against the '184

3.a Admitted prior art on the face of the patent (Background)

These are same‑field, same‑problem references, and the '184's own Background frames the problem they leave open ("no message for the visitors, no means to leave an interactive message… and no means to ensure that unwanted access is not obtained").

3.b Reference list associated with the '184 record (per Typeset.io's extracted citation list)

Includes Menard ("Personal medical device communication system and method," Jun. 7, 2002), "Bi-directional wireless detection system," Pinnow, "Apparatus and method for a universal electronic locking system" (Oct. 31, 1984), "Video doorbell system," and Lu, "Image recognition system and method" (Jul. 28, 1989).
Source: https://typeset.io/papers/detection-and-viewing-system-17szo1l0tk

3.c The prior art that actually defeated the '184 claims (PTAB record)

🔴 Flagged uncertainty: I verified Naidoo‑068 (US 8,520,068) and Schnell (US 6,735,387) with reasonable confidence, but Naidoo‑091 and Saylor remain unidentified by full citation, and Menard has two candidate identities in the record (the 2002 "personal medical device communication system" cited on the '184's own list vs. WO 01/93220 cited in the sibling IPR). Per the operating rule, I am not auto‑correcting these; treat the identifiers as literally recorded and the full citations as unverified.

4. The combinations and why a POSITA would have made them

The two IPRs together invalidated all 21 claims. They should be read as the concrete, adjudicated proof of obviousness. The grounds were reported by Bloomberg Law as resting on "prior art that discloses a multi‑access remote system [Vaios], that teaches a wireless communication and control system for a variety of applications [Menard], and that is titled 'Motion Detector Camera' [Schnell]."
Source: https://news.bloomberglaw.com/ip-law/case-patents-obviousness-p-t-a-b-516

Combination 1 — Naidoo‑068 (primary) + Vaios + Saylor → claim 1 (and dependents)

(IPR2022‑00811, Ground 6; also Grounds 3–5)

What Naidoo‑068 supplies, mapped to the claim:

• "a wireless device associated with a door" — cameras 112, including "an exterior camera 112, positioned at the front door of a residence" (EX1007, 14:20–23).
• "a sensor for activating the camera" — sensors 105 (audio, infra‑red, motion) that trigger camera activation; cameras 112 activate "[u]pon detection of an alarm condition" (EX1007, 6:51–54; 7:38–45).
• "peripheral devices, each associated with a respective user" — remote clients / remote stations 155, authenticated per remote user; General Administrator and guest accounts (EX1007, 8:60–65; 20:14–18; 20:35–37).
• A graphical user interface on a remote device — messaging interface 738 letting remote clients "view live and recorded media" through a network‑based interface (EX1007, 20:14–18; 18:3–14).
• Real‑time transmission — Naidoo's express definition of "real‑time" (EX1007, 19:57–61).

What Vaios adds: the graphical user interface and remote‑viewing software (Petition ¶¶464–466).

What Saylor adds: the association between each peripheral device and a respective user (Petition, Ground 6).

Motivations to combine (record‑supported):

1. Avoid continuous camera operation → cost/energy savings. The Petition's stated motivation; a POSITA would recognize that triggering the camera on a sensor event rather than continuously recording conserves power and bandwidth. Naidoo already discloses the needed infrastructure (motion sensors, cameras, gateway 115, server 131), so the modification is a simple configuration.
2. GUI adoption was standardized by ~2000. Petitioner's expert: GUIs had become standard "because of the computational and graphical power available on a computer, the ease of implementation and modification of such an interface, and its lack of reliance on expensive specialized control hardware such as switches, dials, and slider controls." Naidoo itself teaches remote access "through a web site" as the "preferred mode of configuration" (EX1007, 18:11–14) — which presupposes a GUI. Combining Vaios's GUI software with Naidoo's server 131 yields "improved user experience, convenience, and control," with a high expectation of success because it is a pure software/API integration.
3. Consistent control irrespective of the user's location — the GUI "would allow consistent and convenient control and direction of the surveillance system irrespective of the location of the user" (Petition ¶466).
4. Authentication/security rationale for Saylor — Naidoo already authenticates each remote user against a security server, so pairing each remote client to a respective user is the natural, predictable implementation of Naidoo's own access‑control scheme.

Reasonable expectation of success: no new hardware principle; POSITAs were "proficient… at implementing network communications/software" and at "providing software applications/APIs (and corresponding graphical user interfaces) across networks."

Combination 2 — Vaios (primary) + Menard → claim 1 (and dependents)

(IPR2022‑00811, Ground 1)

Vaios teaches remote access to a security surveillance system "so that continuous monitoring is not required," a camera (video camera 10), a local computer (12), and a GUI. Menard teaches an explicitly wireless exterior module (200D) communicating with a base.

Motivation to combine: substituting a wireless RF/Bluetooth link for Vaios's camera adapter converts a fixed installation into one that is easier to install and maintain, and that can be placed at an exterior door where no cabling exists. The Board credited exactly this rationale in the sibling '614 IPR — "wireless communication offered advantages including easier camera installation and maintenance." The '184 specification itself concedes that the building blocks it uses are off‑the‑shelf ("a suitable wireless digital camera… is the camera currently sold in the United States by Panasonic under the part number BB‑HCM371"), which cuts against any argument of unforeseen difficulty.

Patent Owner's counter‑arguments and why they failed: PO argued (a) Vaios's purpose is only eliminating the need for continuous monitoring, so "adding a speaker and all the other components and software changes to permit two‑way communication is not necessary"; and (b) Vaios requires a camera adapter, which "undercuts Vivint's argument that Vaios is a wireless device." The Board rejected both: (a) the '184's own admitted prior art (Mozer's "Interactive Door Answering and Messaging Device," Knuth's "Voice Activated, Hands Free Telephone Answering Device") already placed two‑way, interactive door communication in the field, so two‑way audio at a door was a known design objective; (b) a wired‑to‑wireless substitution is a recognized design choice with predictable benefit, and Menard supplies the wireless module.

Combination 3 — Vaios (primary) + Schnell (secondary) → claims 14 and 15

(IPR2022‑01364 — the FWD of Apr. 10, 2024)

Schnell ("Motion Detector Camera") is a portable, full‑featured motion‑detection camera with a U‑shaped mounting stand (holster), threaded‑bolt locking mechanism, DC jack/battery contacts (electrical receptacle), portable batteries (portable energy source), and a display screen — precisely the features targeted by claims 14 and 15 in the '184 specification's dependent‑feature list ("the wireless exterior module is portable and includes a locking mechanism and an electrical receptacle…"; "the wireless exterior module has a portable energy source and is secured in a holster").

Motivation: portability of a networked monitoring camera was itself a recognized desideratum — Petitioner pointed to "the desirability of creating portable cameras/monitoring devices as expressly noted by Schnell," with the concrete benefit that a camera "may be securely mounted and connected to power in a simple, convenient manner (e.g., using 'hand‑turnable knobs' and/or straps and portable battery power supplies), and just as easily unsecured and disconnected."

PO's "already portable" rebuttal: PO argued Schnell's camera is already portable, so there is "no need to combine it with anything to achieve portability." The Board rejected this as an attack on the result of the combination rather than on the motivation, which is the classic improper framing.

Combination 4 — Vaios + Choi / Klein + Menard (+ Vaios) → the same dependent limitations

(Grounds run in IPR2022‑01352 against sibling '581; corroborative for the '184's portability/holster claims 14–15)

• Vaios + Choi: Choi's detachable, rechargeable camera in a base slot supplies portability, a holster, a locking mechanism and an electrical receptacle. Motivation: create a portable monitoring device that can be docked, recharged, and relocated — a "predictable application of a known detachable and rechargeable device design to a networked camera system," with high expectation of success because the mechanical docking/locking aspects are straightforward.
• Klein + Menard (+ Vaios): Klein supplies a digital video security system with a wireless camera, a host computer and a remote computer for viewing; Menard supplies wireless two‑way audio; Vaios supplies the GUI.
  Source: https://ai-lab.exparte.com/case/ptab/IPR2022-01352/doc/1001

Combination 5 — Admitted prior art (Marrick + Eckstein + Knuth + Mozer) + Vaios/Naidoo + Menard/Schnell

Even standing alone, the four Background patents supply the door‑answering half of the invention (video door answering, door‑phone audio, hands‑free voice activation, interactive visitor messaging with speech synthesis). Adding Vaios/Naidoo for networked remote viewing and Menard for the wireless exterior link is a textbook KSR combination: same field of endeavor, same problem, familiar elements, predictable result.

5. Mapping of dependent-claim subject matter to art

6. Outcome and reconciliation with the earlier-generated sections

Adjudicated result: the PTAB determined all challenged claims unpatentable as obvious:

• IPR2022‑00811 (FWD Nov. 3, 2023) — claims 1–13 and 16–20/21 unpatentable. https://portal.unifiedpatents.com/ptab/case/IPR2022-00811
• IPR2022‑01364 (FWD Apr. 10, 2024, Vivint, Inc. v. SB IP Holdings LLC, before Lee, Easthom and Jurgovan, on the Hochwald declaration Ex. 1034) — claims 14 and 15 unpatentable.
  https://www.docketalarm.com/cases/PTAB/IPR2022-01364/Vivint_Inc._v._SB_IP_Holdings/docs/04-10-2024-Board/Final_Written_Decision__original-18-Final_Written_Decision__JUDGMENT_Final_Written_Decision_Determining_All_Challenged_Claims_Unpatentable_35_USC_%C2%A7_314.pdf

Together, claims 1–21 — the entire claim set — were held obvious. There is no claim of the '184 that survived an obviousness challenge on the merits.

Federal Circuit: the appeals were dismissed by joint stipulation under Fed. R. App. P. 42(b) on July 10, 2025, covering appeal Nos. 2024‑1307, 2024‑1331, 2024‑1366, 2024‑1874, 2024‑1957, and 2024‑2012, from PTAB Nos. IPR2022‑00811, ‑00812, ‑00813, ‑01352, ‑01364, and ‑01365.
https://cafc.uscourts.gov/opinions-orders/24-1271.ORDER.7-10-2025_2542531.pdf ; https://www.courtlistener.com/opinion/[10626668](/patent/10626668)/sb-ip-holdings-llc-v-vivint-inc/

Corrections to the earlier-generated sections (flagged, not auto‑corrected):

1. Date: the earlier section stated the dismissal order was dated July 11, 2025; the CAFC order itself is dated July 10, 2025. Use July 10.
2. Reconciliation of the "Active – Reinstated" status (earlier uncertainty #2): my earlier note could not reconcile the FWDs with Google Patents' "active" status. The IPR record now shows the two proceedings covered complementary, non-overlapping claim ranges — 1–13 and 16–20/21 in the '811 IPR, and 14–15 in the '364 IPR — i.e., the full claim set. With the appeals dismissed in July 2025, the FWDs became final and the claims should have been cancelled. The Google Patents "Active – Reinstated" / "expires 2026‑10‑04" legend should be treated as stale and non‑dispositive. (I still did not retrieve a § 318(b) cancellation certificate, so I cannot state that certificate issuance as a verified fact.)
3. Appeal‑to‑IPR matching (earlier uncertainty #4): still unresolved. The CAFC order groups six appeals against six IPRs without a one‑to‑one mapping, so the 24‑1331↔IPR2022‑00811 / 24‑1957↔IPR2022‑01364 pairing remains a well‑supported inference, not a docket‑verified fact.
4. Claims 1–21 vs. three independent claims: see the contradiction flagged in §2. The earlier "three independent claims" framing came from the specification's aspects and is not the granted claim architecture.
5. Minor internal inconsistency in the PTAB record itself: one paper describes IPR2022‑00811 as challenging claims 1–13 and 16–20, while the '364 FWD cites the '811 FWD as determining claims 1–13 and 16–21 unpatentable. Either way, the union with claims 14–15 covers the entire set.

7. Separate priority/§ 112 vector (affects the § 103 date, not the merits)

The DJ complaint in Vivint, Inc. v. SB IP Holdings, C.D. Cal. 8:22‑cv‑00034 (transferred to E.D. Tex. 4:21‑cv‑00912) alleged inequitable conduct premised on the omission of a co‑inventor, Emmanuel Ozoeneh, who was allegedly named on provisional 60/418,384 but omitted from the nonprovisional. This is an allegation in a pleading, not an adjudicated fact. If the § 120 chain to the Oct. 15, 2002 provisional were broken (for any reason — inventorship, or lack of § 112 support in the provisional for the later claims), the critical date would move to Oct. 30, 2007 (or Oct. 9, 2003 for the '644 chain), dramatically expanding the § 102/§ 103 prior‑art universe and reinforcing the invalidity conclusion above.

8. Bottom line

Every claim of US 8,144,184 — claims 1–21 — is obvious under pre‑AIA § 103(a) over combinations of:

1. Naidoo‑068 + Vaios + Saylor (claim 1 and dependents);
2. Vaios + Menard (claim 1 and dependents); and
3. Vaios + Schnell (claims 14–15), with Vaios + Choi and Klein + Menard (+ Vaios) as corroborating alternative combinations for the same dependent subject matter —

each motivated by (i) identity of field and problem, (ii) recognized advantages of wireless over wired links (easier installation/maintenance), (iii) power/bandwidth savings from sensor‑triggered rather than continuous recording, (iv) the standardization of graphical user interfaces and web‑based remote access by 2000 (which Naidoo itself teaches), and (v) express patentee‑side admissions in the '184's own Background and specification, all with a reasonable expectation of success because the combination used off‑the‑shelf components in known ways. The PTAB reached exactly this result in two Final Written Decisions, and the Federal Circuit appeals were dismissed by joint stipulation on July 10, 2025.

Residual uncertainties I will not paper over: the verbatim claim language was never retrieved, so the claim‑number‑to‑limitation mapping in §2 and §5 is reconstructed; the full citations for Naidoo‑091 and Saylor, and the correct identity of Menard, are unverified; and the PTAB's treatment of Patent Owner's Bluetooth/video teaching‑away argument was a live weakness that the Board nonetheless resolved for the Petitioner, not a clean win.