US 9836259

Based on the authoritative patent text you supplied plus live searches of USPTO records (uspto.report, Google Patents, Justia, Unified Patents, Flexiworld's own portfolio page), here is the requested summary.

US Patent 9,836,259 (US9836259B2)

Abstract (per Flexiworld portfolio page and USPTO record): Output devices or systems, such as televisions, speakers, projectors, or output controllers, are disclosed for receiving digital content from a digital content service operated, at least partly, over the Internet. The output device includes wireless communication circuitry and an interface. To set up the device for receiving and playing digital content, it first receives, via the interface, security information, then establishes a wireless local area network connection using that security information. After establishing the WLAN connection, the device connects to a server over a network to download and install software applications/components for upgrading or modifying its capabilities. Thereafter, the device is set up to receive digital content from the digital content service using the downloaded and installed software components.

Independent claim overview — verified text of claim 1 (as reproduced in the Flexiworld portfolio page and matching the published grant):

• Claim 1 (apparatus): A wireless output device for connecting to a wireless local area network and receiving digital content from a digital content service operated at least partly over the Internet. The device outputs video or audio digital content and is at least one of: a television, a wireless output controller wire-connectable to a television, a projector, or a speaker (individually or in combination). It includes: an interface for user interaction; operating system software to facilitate download/install of application software; one or more processors executing at least part of the OS; and one or more wireless communication units (at least one for establishing a WLAN connection). It is operable to: (i) receive, via the interface, security information (name, password, ID, PIN, IP address, or security key, individually or in combination); (ii) establish the WLAN connection using that security information; (iii) download, after the WLAN connection is established, application software/components from one or more servers or host computers over a network, for upgrading/updating/adding/modifying device features; (iv) install the downloaded software, facilitated at least in part by the OS; (v) receive, via the wireless unit(s) and facilitated by the installed software, digital content (audio and/or video) from application/content servers operated over the Internet by the digital content service; and (vi) process at least part of the received digital content (color operation, image processing, scaling, resolution, interpolation, decoding, or encoding, individually or in combination) for outputting or playing at the device.

Plain-language summary of the claimed invention: The patent claims a smart TV, streaming box/output controller, projector, or speaker that can be onboarded by a user entering Wi-Fi credentials through a local interface, then uses that connection to download and install its own apps/firmware, and thereafter streams audio/video from an Internet content service (e.g., a Netflix-type service), processing the stream (decode/scale/color) for local playback — i.e., a "smart connected media device" set-up and content-delivery claim.

Uncertainty noted: I could verify only claim 1 verbatim from authoritative sources. The full claims section was not included in the patent text you provided (it was truncated), and I could not retrieve the complete "What is claimed" text for this patent from the sources reached before the search limit. The patent very likely contains additional independent claims (Flexiworld continuations of this family typically include multiple independent device/method claims), but I cannot confirm their number or verbatim text with high confidence. If you need all independent claims parsed, I'd recommend pulling the claims section from USPTO Patent Center or the full Google Patents HTML, which was truncated in the fetch.

CAFC 2026 docket search: I found no CAFC 2026 appeal docket for 9836259. The identified litigation is all at the district-court level (Texas Eastern and Western District), with the most recent shown case being E.D. Tex. 2:26-cv-00229. I did not find any Federal Circuit notice of appeal for this patent in 2026; if one exists it was not indexed in the sources I reached.

I'll research litigation involving US 9,836,259 across the specified sources.

Good initial results. Let me gather case-specific details and check for additional defendants.

Let me confirm the remaining case details and check for any other '259 defendants.

I hit the research-step limit mid-stream, so this is presented with explicit verification flags. Here is the litigation picture for US 9,836,259 specifically.

Litigation Involving U.S. Patent 9,836,259

Summary: five district-court cases are reported against this patent number, all filed by Flexiworld Technologies, Inc. as sole plaintiff, all in Texas federal courts. No PTAB proceeding and no Federal Circuit appeal naming the '259 was found (carried forward from the earlier sections of this analysis). No ITC investigation naming the '259 was found.

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Case detail and sourcing

1. Roku — 6:21-cv-00680 (W.D. Tex.)
The '259 assertion against Roku is documented in the case's own Case Readiness Status Report (ECF No. 29, filed Oct. 25, 2021), quoted in Roku's IPR2022-01114 petition record: "Flexiworld has asserted six patents, including U.S. Patent Nos. 9,042,811, 9,836,259, 9,965,233, 10,140,073, 10,768,871, and 11,029,903." The case ended via the October 2022 Flexiworld–Roku Patent License Agreement, which the parties told the PTAB "completely resolves all pending controversies." Source: https://www.docketalarm.com/cases/PTAB/IPR2022-01267/Roku_Inc._v._Flexiworld_Technologies_Inc/

⚠️ Do not conflate the two Roku suits. Flexiworld Techs., Inc. v. Roku, Inc., No. 6:20-cv-00819-ADA (W.D. Tex.) asserted only the '064, '114, and '066 patents (per Dr. Almeroth's rebuttal report, Ex. 1022 in IPR2021-00715). The '259 was NOT asserted in 6:20-cv-00819.

2. Hisense — 2:22-cv-00225 (E.D. Tex.)
Covered in IPWatchdog's July 1, 2022 filings roundup, which lists case number 2:22-cv-00225 with defendants including Hisense International Hong Kong America Investment Co. Ltd., Qingdao Huatong State-Owned Capital Operation Group Co. Ltd., Guiyang Hisense Electronics Co. Ltd., Hisense Import Export Co. Ltd., Qingdao Hisense Electronics Industry Holdings Co. Ltd., and patents 10037178, 8169649, 9836259, 9069510, 9965233. Source: https://ipwatchdog.com/2022/07/01/patent-filings-roundup-centripetal-sees-iprs-microsoft-engineer-sues-seven-waco/

⚠️ Distinct case number, same family of defendants: 2:22-cv-00228 (Flexiworld v. Hisense) is a different case asserting 9037088, 8711408, 11096056, 8184324, 9042811 — not the '259. The AO 120 form in the PTAB record listing 7,609,402 / 10,140,072 / 10,140,073 / 10,387,087 / 10,768,871 also corresponds to a different Hisense filing, not 2:22-cv-00225.

3. Sony — 2:23-cv-00616 (E.D. Tex.)
Patents asserted: US9836259B2, US11096056B2, US9798516B2, US9042811B2, US10768871B2, US11029903B2, US10162596B2. First Amended Complaint filed 2024-06-06 with Exhibit 3 = US9836259. A docket control order (2024-06-20) had set Markman for 2025-06-11, pretrial conference for 2025-11-03, and jury selection for 2025-12-08 — none of which occurred, because the case was dismissed with prejudice first. Verbatim order text: "the Court ACKNOWLEDGES AND ACCEPTS that all claims and counterclaims in the above-captioned case are DISMISSED WITH PREJUDICE. The Parties shall bear their own costs, expenses, and attorneys' fees." Sources: https://www.pacermonitor.com/public/case/51750256/Flexiworld_Technologies,_Inc_v_Sony_Corporation ; https://www.patsnap.com/fr/resources/blog/litigation/flexiworld-technologies-v-sony-corp-wireless-output-smart-device-patents-patsnap/

4. LG — 2:25-cv-00960 (E.D. Tex.)
Patents asserted: 9,042,811; 9,836,259; 9,965,233; 10,140,072 [sic]; 10,162,596; 10,037,178. For the '259, the complaint analysis states Flexiworld asserts independent claim 1 and dependent claims 2, 4, 5, 7, 8, 9, 10, and 11, and that the infringement theory "focuses on the products' capability to connect to the internet via Wi-Fi and stream media from various content platforms." Willfulness is premised on an October 1, 2021 notice letter. Source: https://ai-lab.exparte.com/case/dct/txed/2:25-cv-00960/doc/analysis/1

⚠️ Contradiction flagged, not auto-corrected. Korean and Chinese trade reports (2025-10-09) state Flexiworld filed "six patent infringement lawsuits" against LG on Sept. 18, 2025, asserting patent numbers including "10,140,072." Two issues: (a) as noted in a prior section of this analysis, "10,140,072" appears to be a transcription artifact for U.S. 10,140,073, but per the operating rules I have not corrected it; (b) I could confirm only one LG docket, 2:25-cv-00960, so I cannot verify whether six separate suits were filed or one suit covering six patents. Sources: https://www.sohu.com/a/942137477_361113 ; https://www.the-biz.co.kr/news/articleView.html?idxno=[671767](/patent/671767)

5. TCL — 2:26-cv-00229 (E.D. Tex.)
Filed 2026-03-20, Judge Gilstrap, cause of action pleaded as 35 U.S.C. § 145 patent infringement. Accused products: TCL smart TVs, soundbars/speakers, headphones, and mobile phones. Docket: https://dockets.justia.com/docket/texas/txedce/2:2026cv00229/[244557](/patent/244557)

⚠️ UNVERIFIED — '259 assertion: the TCL complaint-analysis pages I reached surfaced allegations under the '871 (US 10,768,871), '798, and '521 patents; the page was truncated before I could confirm whether the '259 is pleaded. A prior section of this analysis asserts the '259 is in the TCL case; I could not confirm that in this pass. Verify against the TCL complaint (Dkt. 1) and its AO 120 form.

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Explicit negative findings

• No known litigation outside the five Texas cases above. I found no ITC Section 337 investigation, no state-court action, and no foreign proceeding naming US 9,836,259.
• No Federal Circuit appeal involving 9,836,259 was found (consistent with the earlier CAFC search in this file). ⚠️ Flag for verification on the CAFC docket — and note that Sony's dismissal and the Roku license both mooted any appealable judgment.
• No judgment on the merits of the '259 in any case. Every disposition was procedural: joint dismissal with prejudice (Sony), venue transfer (Hisense), or license-based resolution (Roku). No court has ever construed a claim of the '259, and no court has held any '259 claim valid or invalid.

Conflicts with previously generated sections — flagged

1. Stanford NPE Litigation Database is under-inclusive. https://npe.law.stanford.edu/patent/9836259 lists only two cases (Sony 2:23-cv-00616; Hisense 2:22-cv-00225) and omits Roku, LG, and TCL. Do not rely on Stanford's count alone.
2. Google Patents' "Family has litigation" block for the '259 lists 2:23-cv-00616, 6:21-cv-00680, 2:26-cv-00229, 2:25-cv-00960, and 2:22-cv-00225 — matching my five. That block is family-level, so it is corroborative but not, by itself, proof that each case asserts the '259; I independently confirmed the '259 in cases 1–4 and could not confirm it in case 5.
3. Hisense disposition was not previously reported as a venue transfer. The earlier sections describe the Hisense case without noting that it was transferred out of E.D. Tex. on 2022-10-31. The receiving district is unverified.
4. Date discrepancy carried forward: previous sections in this file used both a 2026-09-16 and an April 26, 2026 "today." The TCL docket (last retrieved 2026-04-16) is consistent with the April 2026 date used here.

Bottom line for the client

The '259 has been asserted five times — Roku (2021, W.D. Tex.), Hisense (2022), Sony (2023), LG (2025), and TCL (2026) — all by Flexiworld Technologies, Inc. as sole plaintiff, all in Texas, and all with zero merits adjudication. Two resolved by license/settlement (Roku via the Oct. 2022 global license; Sony via dismissal with prejudice on 2025-05-29), one left the district on venue (Hisense), and two remain live (LG 2:25-cv-00960; TCL 2:26-cv-00229). Any statement that the patent has "been litigated and upheld" would be inaccurate; any statement that it has "been invalidated" would be equally inaccurate.

PTAB / AIA Trial Analysis — US 9,836,259 B2 (Flexiworld Technologies, Inc.)

Verification note up front. I sourced the proceedings list from the structured "PTAB proceedings on file" block (USPTO Open Data Portal canonical list) and then ran targeted web searches of PTAB dockets, Unified Patents' own litigation portal, Docket Alarm, Patexia, and the IPR dockets for the sibling patents. No AIA trial proceeding naming U.S. Patent No. 9,836,259 was found in any source. The IPRs that surfaced all name other patents in the same Flexiworld continuation family. I could not exhaustively crawl PTAB E2E, so treat the zero-count as "confirmed by ODP + search, recommend a final E2E docket check."

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Proceedings overview

Total AIA trial proceedings on US 9,836,259: 0 — the patent has never been challenged at the PTAB, so no claim of the '259 patent is canceled, no claim has been held patentable, and no § 315(e)(2) estoppel runs in your favor; the defensive posture is therefore "untested and structurally hard to attack, but surrounded by a seven-proceeding family history that hands you both a roadmap and a very loud warning."

The bottom line for a defendant is not "the troll has no case" and not "the patent is hardened" — it is "the '259 is the sibling the petitioners kept skipping." Roku sued on the '259 patent in W.D. Tex. 6:21-cv-00680 and then filed IPRs against at least six other Flexiworld patents before taking a global license instead of petitioning on the '259. Unified Patents challenged the immediate sibling ('257) and lost on the merits in a Final Written Decision. That pattern tells you where the soft ground has already been dug and where it has already been mined out.

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NO PROCEEDING ON FILE — US 9,836,259

• Type: n/a (no IPR, no PGR, no CBM)
• Filed: n/a
• Status: n/a — "no AIA trial proceedings" per the structured ODP block; consistent with every search run
• Judge panel: n/a
• Petition grounds: n/a
• Institution decision: n/a
• Final Written Decision: n/a — no claim of the '259 has ever been construed, canceled, or confirmed at the PTAB
• Settlement / termination: n/a
• Appeal: none. The prior section's CAFC 2026 docket search also found no Federal Circuit appeal involving 9,836,259.
• Defensive value: Zero estoppel, zero canceled claims, and zero PTAB guidance on the '259's specific claim language (including independent claim 1's device-side "television / output controller / projector / speaker" formulation, which is materially different from the mobile-side claim 27 of the '257 that the Board did adjudicate). You get a clean slate procedurally — and no free kill.

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Family-adjacent proceedings (context only — none of these adjudicate the '259 patent)

These are ordered most-impactful-first. Every one of them is about a different patent number. Do not cite any of them as a holding on the '259.

IPR2022-00775 — Unified Patents, LLC v. Flexiworld Technologies, Inc.

• Type: Inter Partes Review
• Patent at issue: U.S. 9,836,257 (the '259's immediate sibling — filed from a different application, different provisional chain)
• Filed: 2022-04-08
• Status: Final Written Decision entered; no challenged claim held unpatentable (Paper 41, 2023-11-01). Patent Owner's Revised Contingent Motion to Amend was dismissed — so no claims were canceled and no substitute claims issued.
• Judge panel: APJs Terrence W. McMillin, Christopher L. Ogden, Brent M. Dougal (Opinion by Ogden at institution)
• Petition grounds: claims 27 and 28, pre-AIA § 103(a) obviousness, two grounds — Olgaard + Moghadam; Acharya + Griffiths. References asserted as prior art under pre-AIA § 102(e) (Olgaard effective 2000-10-24; Acharya 2000-12-22).
• Institution decision: Instituted on all grounds and all challenged claims, 2022-11-08. Panel credited petitioner's showing that a POSITA would have used a Bluetooth authentication step with IEEE 802.11 content transfer, and that Acharya's expansion module was a "distinct device."
• Final Written Decision: Verdict—petitioner failed. The Board held Unified did not prove claims 27 and 28 unpatentable. The dispositive issue was priority, not claim construction: Flexiworld "swore behind" both references, with the Board finding a corroborated conception date no later than 2000-10-22 (before both references' effective dates) plus reasonable continuous diligence during the critical period, on the strength of draft provisional documents with metadata and inventor testimony. The Board treated the OS-generated metadata as corroborating evidence "the most reliable indicator of the latest date each draft was completed," and excused 14–21 day gaps over Thanksgiving/Christmas/New Year as diligent. Unified offered no alternative ground independent of Olgaard and Acharya.
• Settlement / termination: none — tried to FWD. Unified was represented in-house (Rossen, Mansinghani); Flexiworld by Nelson Bumgardner Conroy (Bumgardner, Ginnings, Delafield).
• Appeal: no Federal Circuit appeal confirmed. I found no CAFC docket or opinion for IPR2022-00775. If Unified appealed, it was not indexed in the sources reached — flag for verification on the CAFC docket.
• Defensive value: This is the single most important fact in the file. The best-organized defensive aggregator in the country took its shot at the family and lost on a priority-date defense — and lost on a record that included the inventors' October–November 2000 draft trail and metadata exhibits. Any '259 petition that relies on art dated after roughly October 2000 will run into the same wall. Sources: Unified's own docket notes (https://www.unifiedpatents.com/insights/2022/4/11/flexiworld-patent-challenged; https://www.unifiedpatents.com/insights/2022/11/10/flexiworld-wireless-communications-patent-likely-invalid) and the FWD as docketed at https://www.docketalarm.com/cases/PTAB/IPR2022-00775/ (retrieve the Paper 41 PDF via PTAB E2E: https://ptab.uspto.gov).

IPR2021-00714 — Roku, Inc. v. Flexiworld Technologies, Inc.

• Type: Inter Partes Review
• Patent at issue: U.S. 8,989,064 (family member; not the '259)
• Filed: 2021
• Status: FWD issued 2022-10-21 — "Determining Some Challenged Claims Unpatentable"
• Judge panel: APJs McMillin, Ogden, Dougal (Opinion by Dougal)
• Petition grounds: claims 1–10, 12, 14–20 challenged (grounds per the '064 record included Yamaguchi/Gu, Ikonen/Gu, Ikonen/Kammer and variants with Garfunkel and Peng)
• Institution decision: instituted on the challenged claims
• Final Written Decision: Held unpatentable: claims 1–10, 12, and 14. Held NOT shown unpatentable: claims 15–20. This is the one family data point where Flexiworld lost claims. It shows the family is not invincible — it is vulnerable when the petitioner's art predates the priority chain and the claim is not saved by the conception/diligence record.
• Settlement / termination: Roku and Flexiworld entered a global Patent License Agreement dated 2022-10-21, resolving all pending controversies and dismissing the related W.D. Tex. actions with prejudice; Roku then moved to terminate its other IPRs.
• Appeal: not confirmed in the sources reached. Flag for verification — a pre-license FWD on the '064 may or may not have been appealed; I will not assert either way.
• Defensive value: Directly limits the "the family survives everything" narrative. If your '259 invalidity theory needs a win on undisputed prior art, IPR2021-00714 is proof that such art exists in this family. FWD at https://www.docketalarm.com/cases/PTAB/IPR2021-00714/Roku_Inc._v._Flexiworld_Technologies_Inc/ (Paper 35).

IPR2022-01267 / IPR2022-01268 / IPR2022-01269 — Roku, Inc. v. Flexiworld Technologies, Inc.

• Type: Inter Partes Review (three petitions)
• Patents at issue: '257 (01267), 9,389,822 (01268), 7,944,577 (01269)
• Filed: 2022-07-29
• Status: Terminated pre-institution by joint motion under 35 U.S.C. § 317 and 37 C.F.R. §§ 42.72, 42.74
• Judge panel: none reached the merits (terminated before institution decision)
• Petition grounds: never adjudicated
• Institution decision: none — no preliminary response date even reached (PO responses were due 2022-12-08; the case ended 2022-10-27)
• Final Written Decision: none
• Settlement / termination: Roku and Flexiworld entered a Patent License Agreement on 2022-10-21, which "completely resolves all pending controversies between Roku and Flexiworld" and dismissed the Roku litigation with prejudice. The agreement was filed under seal as business-confidential under § 317(b) — terms are confidential and I make no representation about their scope.
• Appeal: n/a
• Defensive value: No estoppel attaches. Estoppel under § 315(e)(1)/(2) requires a final written decision; a pre-institution termination creates none. Roku (and, on the license's face, Roku's privies) therefore remain free to raise these grounds against the '259 in district court. The joint motion text also confirms something useful: Flexiworld asserted the '259 against Roku in 6:21-cv-00680 and Roku never petitioned against it. Source: https://www.docketalarm.com/cases/PTAB/IPR2022-01267/Roku_Inc._v._Flexiworld_Technologies_Inc/

IPR2022-01114 (and 01112 / 01113) — Roku, Inc. v. Flexiworld Technologies, Inc.

• Type: Inter Partes Review
• Patents at issue: 9,965,233 (01114); 10,140,073 (01112); and — as an inference only — 9,042,811 (01113). Roku's '073 petition states it was "concurrently filing petitions against family members U.S. Pat. Nos. 9,042,811 and 9,965,233." I could not retrieve the 01113 caption directly and will not state it as confirmed.
• Filed: 2022-06-30
• Status: Terminated (01114: termination date 2022-10-31 per PTAB docket data)
• Judge panel: not reached
• Petition grounds: e.g., '233 — claims 1 and 37–49 obvious over Yukie + Boyce + Gunter, per the Olivier declaration
• Institution decision: none
• Final Written Decision: none
• Settlement / termination: same October 2022 Roku–Flexiworld license event; terms confidential
• Appeal: n/a
• Defensive value: same as above — terminated pre-institution, therefore no estoppel, and again demonstrates Roku's petition map excluded the '259. Source: https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2022-01114

IPR2021-00713 / IPR2021-00715 — Roku, Inc. v. Flexiworld Technologies, Inc.

• Type: Inter Partes Review
• Patents at issue: 10,740,066 ('713); 10,346,114 ('715) — per Roku's own exhibit list naming "instituted reviews in IPR2021-00713, IPR2021-00715, and IPR2021-00714"
• Filed: 2021
• Status: instituted (per the '073 petition's cross-reference); subsequent disposition not confirmed in the sources reached
• Judge panel: overlapping membership with the 00714 panel is likely but not confirmed
• Final Written Decision: not retrieved — do not treat as decided either way
• Settlement / termination: likely swept into the October 2022 global Roku license; not confirmed
• Appeal: not confirmed
• Defensive value: context only; confirms the pattern of a serial, resource-intensive campaign that Flexiworld ultimately monetized by license rather than by trial.

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Strategic summary

Claim status of the '259 patent. Because no AIA proceeding has ever named the '259, every claim of the '259 is UNTESTED at the PTAB. Nothing is canceled. Nothing is confirmed. Any demand letter citing the '259 asserts claims that have never been construed by the Board and never subjected to an institution decision. Do not let opposing counsel blur this with the family outcomes: the '064 FWD (claims 1–10, 12, 14 unpatentable) is about a different patent, and the '257 FWD (claims 27, 28 sustained) is about different claims on a different continuation with a different provisional chain ('257 traces to provisional 60/262,764 / Jan. 2001 lineage; the '259 traces through 09/992,413 to provisional 60/252,682 filed 2000-11-20). The conception/diligence evidence Flexiworld used to win IPR2022-00775 included the very 60/252,682 chain materials, so the playbook is transferable — but the holding is not binding on the '259.

Estoppel landscape. There is no useful estoppel for you and no dangerous estoppel against your prior art. § 315(e)(2) estoppel arises only from a final written decision and binds the petitioner, its real parties in interest, and privies. The only FWD in this family that actually reached a merits determination on a Flexiworld patent were (i) IPR2022-00775 (Unified, '257 — estops Unified and, if you can establish privity, potentially its members/real parties in interest as to grounds raised or reasonably raisable on the '257, not the '259) and (ii) IPR2021-00714 (Roku, '064 — estops Roku/privies as to the '064). Roku's '259-adjacent petitions (IPR2022-01112/01113/01114) and its '257/'822/'577 petitions (01267/8/9) all terminated before institution and therefore created no estoppel whatsoever. Practically: the prior-art grounds against the '259 remain fully available to any defendant who is not Unified or Roku, and remain available to Roku too. The one thing you inherit from Unified's loss is a strategic constraint: art with an effective date after roughly 2000-10-22 is a bad bet, because Flexiworld has already litigated and won a corroborated conception date in that window.

Pattern signals. (1) A defensive aggregator is in the chain — Unified Patents filed IPR2022-00775 against the '257 with a Kevin Jakel RPI declaration, and its subscription-zone model drew a real-party-in-interest challenge from Flexiworld (raised via Ex. 2001–2008: Unified's member list, zone map, Roku's 2021 financial summary). If you are a Unified subscriber, expect Flexiworld to run the same RPI/privity attack against you. (2) Flexiworld is a licensing-first NPE: it has now exited against Roku (Oct. 2022) and Sony (dismissal with prejudice, 2025-05-29) without a merits trial, while simultaneously running a fresh campaign against LG (E.D. Tex., September 2025) asserting '811, '259, '233, '10,140,072 [sic], '10,162,596, and '10,037,178. (3) Flexiworld defends its priority chain aggressively and successfully — its PTAB wins rest on vintage draft documents and metadata, and it litigated that record with a dedicated expert (Cooklev declarations in IPR2022-00775) as well as an inventor declaration and a diligence declarant. (4) Flexiworld has not been an aggressive PTAB appellant in the proceedings I could verify; no CAFC appeal on the '259 exists and no appeal on IPR2022-00775 was confirmed.

One timing reality check that changes the ROI calculus: the '259 record shows anticipated expiration 2021-11-18 and a status of "Expired – Fee Related." Damages exposure is therefore capped by the six-year lookback to pre-expiration sales, and there is no injunction exposure. Even a perfect IPR win eliminates only a shrinking pre-2021 damages window. Weigh that against the cost and against Flexiworld's demonstrated priority-date defense before you file.

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Recommended next steps

1. Confirm the zero-count directly on PTAB E2E (https://ptab.uspto.gov) by searching party "Flexiworld" and by patent number "9836259," and separately on the Unified Patents portal and Patent Center (https://patentcenter.uspto.gov). The ODP block is canonical, and it agrees with search — but do the docket pull so your opinion letter can say "searched, confirmed none" rather than "APPI shows none."
2. If you are being asserted on the '259, the absence of PTAB activity is not a defense — it is a decision point. No claim is canceled, so any suggestion that "the patent is already dead" is wrong and should not appear in a client communication.
3. Pull the Roku IPR record and the sealed license scope. IPR2022-01114 was terminated 2022-10-31 and IPR2022-01267/8/9 terminated pre-institution; the underlying Roku–Flexiworld Patent License Agreement (2022-10-21) is filed under seal as business-confidential under § 317(b), but its face page and any identification of licensed patents is worth 30 minutes, because if the Roku license covers the '259, that is a market signal on value and a possible source of a "licensee as prior user / first-sale" argument structure. Source: https://www.docketalarm.com/cases/PTAB/IPR2022-01267/Roku_Inc._v._Flexiworld_Technologies_Inc/
4. Mine IPR2022-00775's exhibit list as your prior-art and no-go map before you draft. Unified's art package (Olgaard, US 7,849,198; Moghadam, US 5,917,542; Acharya, US 2002/0080091; Griffiths, US 7,136,999; plus Newton, the Microsoft Computer Dictionary, the Data & Telecommunications Dictionary, and Chuah) is a ready-made starting set — but every reference with a post-October-2000 effective date is exposed to the same swearing-behind attack that killed that petition. Your '259 petition should lead with art that predates 2000-10-22, or you should plead § 112 and claim-scope grounds instead. Note the '259's independent claim 1 is a device-side claim (television / wire-connectable output controller / projector / speaker with an OS, an interface receiving security information, WLAN setup, post-connection software download/install, and content processing), which is a different claim to attack than the mobile-side claim 27 that Unified failed on.
5. Watch the LG case for a '259 petition. Flexiworld's September 2025 LG action (E.D. Tex., per the reported filing in Marshall) asserts the '259 along with '811, '233, '10,140,072 [sic], '10,162,596, and '10,037,178. LG is the first defendant to face the '259 since Sony exited, and LG is not time-barred (the complaint is recent). If an IPR on the '259 is filed, the statutory clock is: institution decision due within 6 months of the petition's filing, and FWD due within 12 months of institution (35 U.S.C. § 316(a)(11)). Practical milestones to calendar: PO preliminary response (3 months), institution, PO response (3 months post-institution), petitioner reply, oral argument (~month 9–11), FWD.
6. Check your own § 315(b) clock immediately. The one-year bar runs from service of a complaint alleging infringement of the '259. Sony was served in the 2023-12-19 E.D. Tex. action (2:23-cv-00616, dismissed with prejudice 2025-05-29), Hisense in 2022, Roku in 2021, LG in 2025. If your entity was served more than one year ago, IPR is likely foreclosed and your PTAB options collapse to ex parte reexamination (no estoppel, no time bar) or a district-court invalidity case. This is a fact-specific question — confirm service dates from your own docket before relying on it.
7. Do not draft around a nonexistent FWD. There is no Final Written Decision on 9,836,259 to link to, quote, or rely on. The only family FWDs worth attaching to a memo are IPR2022-00775 Paper 41 (2023-11-01, '257 — no claims unpatentable) and IPR2021-00714 Paper 35 (2022-10-21, '064 — claims 1–10, 12, 14 unpatentable), both retrievable at https://ptab.uspto.gov and mirrored on Docket Alarm.

Contradictions flagged. (a) The prior summary's litigation list is consistent with what I found, but note that the September 2025 LG complaint asserts the '259 and is the newest live '259 assertion — it is not in the earlier litigation list and should be added. (b) One Chinese-language report renders asserted patent "10,140,072," which does not appear to be a valid US patent number; the family member is U.S. 10,140,073. Per operating rules I have not auto-corrected it — treat "10,140,072" as a likely transcription artifact and verify against the LG complaint. (c) Earlier summaries in this analysis referenced an ODP "no PTAB proceedings" result for this patent; nothing in the family IPR record contradicts that, and I found no evidence of a '259 petition.

I'll research the assignment record for US 9,836,259 across the specified sources.

Let me pull the assignment and legal-event records directly.

Let me find the specific reel/frame for the '259 from the LG complaint analysis and other complaint records.

I hit the research-step limit before I could retrieve the patent-specific reel/frame for the '259 itself. Here is the ownership reconstruction with explicit verification flags.

Ownership & Assignment Analysis — US 9,836,259 B2

Inventors

Both inventors appear on the face of the patent (Google Patents front page) and are the two assignors in the sole recorded assignment of record (see timeline). They are also the named inventors across the Flexiworld continuation family (the same pair appears as assignors on the sibling '402 and '072 assignments referenced below).

Unusual-pattern check — no departure signal, but one caveat.

• I found no evidence of either inventor departing Flexiworld within 12 months of filing, and no evidence of a post-filing inventor-side sale. The 2016-11-22 continuation was filed 15 years after the 2001 parent — which is itself the notable pattern here: the inventors stayed attached to the same portfolio through a very long continuation campaign rather than exiting.
• ⚠️ Unverified/ambiguous: the Stanford NPE Litigation Database entry for 9836259 renders the string "3 Failed startup" adjacent to the Sony case row (https://npe.law.stanford.edu/patent/9836259). I could not determine whether that is a status tag for the patent owner or an unrelated field artifact. Do not treat "failed startup" as established on the strength of that render alone. There is no bankruptcy filing, dissolution order, or portfolio sale in any record I reached.

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Original assignee

Flexiworld Technologies, Inc. — named as both original assignee and current assignee on the Google Patents record for US 9,836,259, and the sole plaintiff in every assertion of this patent.

⚠️ Flag: PatSnap's litigation write-up labels Flexiworld a "Non-practicing entity" expressly (https://www.patsnap.com/fr/resources/blog/litigation/flexiworld-technologies-v-sony-corp-wireless-output-smart-device-patents-patsnap/). That is a third-party characterization, but it is corroborated by the § 287 pleading above — so it is evidence-backed, not naming-based.

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Assignment timeline

Critical limitation, stated plainly: I retrieved only one recorded assignment touching this chain, and I could not confirm the reel/frame that the USPTO Assignment Center assigns to US 9,836,259 specifically. What I have verbatim is (a) the Google Patents legal-events entry for the 2017-05-15 reassignment, and (b) two reel/frame numbers drawn from sibling Flexiworld patents in the same family — cited here as cross-reference only, not as the '259's reel/frame. I am not going to present a sibling's reel number as this patent's.

1. Inventors → Flexiworld Technologies, Inc.

• Executed: date not retrieved (the filing date 2016-11-22 is the latest date it could have been executed for a § 261 record accompanying the application) / recorded 2017-05-15
  • Reel/Frame: ⚠️ NOT VERIFIED for the '259. The Google Patents legal-events block records the event as "2017-05-15 Assigned to FLEXIWORLD TECHNOLOGIES, INC." with the conveyance text "ASSIGNMENT OF ASSIGNED INTEREST (SEE DOCUMENT FOR DETAILS)" and assignors "CHANG, WILLIAM HO; LIU, CHRISTINA YING." No reel/frame was exposed in the sources reached.
  • Conveyance: Assignment (assignment of assigned interest / inventor-to-company)
  • Assignor: William Ho Chang; Christina Ying Liu (joint)
  • Assignee: Flexiworld Technologies, Inc.
  • Correspondent: ⚠️ NOT RETRIEVED. I could not identify the attorney or firm of record that filed this recording. Flagged below as an incomplete check.
  • Context: Routine inventor-to-original-assignee assignment, recorded ~6 months after the continuation filing and ~7 months before the 2017-12-05 grant. This is an ordinary prosecution-stage formality, not an acquisition, fire-sale, reorg, or transfer-to-asserter.

2. No further recorded assignments

I found no post-issuance assignment of US 9,836,259. The patent has remained with Flexiworld Technologies, Inc. from the 2017-05-15 recording through every assertion of record (2021 Roku → 2026 TCL). This is corroborated independently: Flexiworld is pleaded as "the owner and assignee of all rights, title, and interest" in its own complaints (e.g., ¶¶ 50–52 of the Flexiworld complaint as reproduced at https://insight.rpxcorp.com/litigation_documents/15143102).

Cross-reference only — sibling-patent reel/frames (do NOT attribute to the '259)

These confirm the pattern (every patent in the family carries a single inventor→Flexiworld assignment and no downstream transfer), but the '259's own reel/frame remains unverified. Do not enter 028733/0064 or 042385/0202 into a chart as the '259's recording.

If the Assignment Center returns no record for this patent, the instruction is to stop after this section — it does not. There is one record, and it is the ordinary inventor assignment.

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Timeline diagram

timeline
    title Ownership of US 9836259
    2000 : Priority provisional filed
    2001 : Parent non-provisional filed
    2016 : Continuation application filed
    2017 : Inventors assign to Flexiworld
         : Patent granted
    2021 : First suit filed vs Roku
    2022 : Suit filed vs Hisense
    2023 : Suit filed vs Sony
    2025 : Suit filed vs LG
    2026 : Suit filed vs TCL

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NPE / troll-pattern signals

Overall: the assignment chain is clean and short. The NPE character of this patent comes from who holds it and what that holder does with it, not from a shell-LLC cascade. That distinction matters and I have kept it explicit.

1. Shell-entity transfer — NOT PRESENT

The patent never left the original operating assignee. There is exactly one recorded conveyance (inventors → Flexiworld Technologies, Inc., recorded 2017-05-15), and no subsequent transfer to any entity bearing an "IP / Patents / Licensing / Holdings / Ventures" suffix. No single-member Delaware or Texas LLC appears anywhere in this chain. No registered-agent-service address is implicated. The constraints state "could be a shell is not a finding" — and here there is no shell to point at, because there is no second link at all.

Note the nuance: Flexiworld is itself non-practicing (see signal 2), so the "operating assignee → licensing LLC" tell is inapplicable — there was never an operating product business to strip the patents out of.

2. Known asserter in the chain — PRESENT

• Flexiworld Technologies, Inc. is not on the enumerated list in the task (Acacia, Marathon, IV, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, Spangenberg). I checked and it does not appear on any of them.
• It is, however, independently catalogued and labeled as a non-practicing asserter by multiple third-party directories: Stanford NPE Litigation Database (https://npe.law.stanford.edu/patent/9836259) and PatSnap Eureka, which labels it "Non-practicing entity" in its Sony case write-up.
• Concrete, non-naming evidence: Flexiworld's own § 287 pleading — "Flexiworld has not made, offered for sale, sold, or imported a product that practices any of the Patents-in-Suit" — constitutes a record admission of non-practice, which is the operative fact that distinguishes an NPE from an operating-company assertion.
• Corroborating scale: the '259 has been asserted in five district-court cases (Roku 2021; Hisense 2022; Sony 2023; LG 2025; TCL 2026), and Flexiworld's Lexmark pleadings describe a campaign spanning fifteen separate patents.

Call: PRESENT. This is a strong signal, grounded in the § 287 admission and third-party NPE classification — not in the corporate name.

3. Repeat correspondent across the chain — UNCLEAR / INCOMPLETE

• Within this chain there is nothing to test. With a single recorded assignment, recurrence is impossible by construction. The correspondent of record for the 2017-05-15 recording was not retrieved and I will not invent one.
• What I can document, as a distinct and clearly-labeled observation: Flexiworld's litigation representation is a tight, repeat-player group — Nelson Bumgardner Albritton P.C. / Nelson Bumgardner Conroy PC of Fort Worth, Texas, with Brent N. Bumgardner, Registration No. 48,476, signing the PTAB filings and appearing in the Sony action alongside Charles Austin Ginnings, Janson Westmoreland, and Timothy E. Grochocinski (source: Flexiworld's Patent Owner Exhibit List in IPR2021-00714, https://www.docketalarm.com/cases/PTAB/IPR2021-00714/; and the PatSnap counsel table for 2:23-cv-00616).
• ⚠️ This is NOT the assignment-correspondent signal the task asks for. Litigation counsel and assignment-recording correspondent are different functions. I am reporting it because it is the same kind of "the entities change, the lawyers don't" tell — but I am not scoring it as signal 3. Signal 3 = unclear.

4. Cascading transfers — NOT PRESENT

No consecutive assignments at all, let alone multiple chained LLCs inside 24 months. One conveyance, in 2017, and no movement since. Dates are 9+ years apart from any downstream event.

5. Pre-litigation transfer — NOT PRESENT

The only assignment was recorded 2017-05-15. The first infringement suit naming this patent (Roku, W.D. Tex. 6:21-cv-00680) was filed in 2021 — roughly four years later. The assignment is on the far side of the six-month window and was executed as a filing formality, not to manufacture standing or set venue. Nothing in the chain was arranged in anticipation of assertion.

6. Bankruptcy fire-sale — NOT PRESENT

No Chapter 7 or Chapter 11 proceeding for Flexiworld Technologies, Inc. was found in the records reached, and no patent-sale order. The '259 was never sold in a bankruptcy estate. The Stanford "Failed startup" render (supra) is not evidence of a bankruptcy filing and I am not treating it as such.

7. Privateering — NOT PRESENT

Privateering requires an operating company transferring patents to an NPE that asserts on the operating company's behalf. Here the patent has never been held by a product company other than its own originator; Flexiworld has held it from invention to assertion. There is no transferor–assertor separation to analyze.

8. Defensive aggregator — NOT PRESENT (inverse)

The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. It terminates at Flexiworld, the asserter — and the two most recent assertions (LG 2:25-cv-00960, TCL 2:26-cv-00229) remain live. The patent has not been neutralized.

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Verdict

NPE — moderate confidence

Justification (2–3 sentences, tied to the record): The assignment chain contains exactly one recorded conveyance — the ordinary inventor-to-original-assignee assignment of US 9,836,259 from Chang and Liu to Flexiworld Technologies, Inc., recorded 2017-05-15 (conveyance text: "ASSIGNMENT OF ASSIGNED INTEREST") — with no subsequent transfer whatsoever, which rules out shell-entity transfer, cascading transfers, pre-litigation transfer, bankruptcy fire-sale, privateering, and defensive-aggregation as chain-based signals. What drives the verdict is the holder rather than the chain: the assignee is a documented non-practicing asserter, established not by its name but by its own § 287 pleading that it "has not made, offered for sale, sold, or imported a product that practices any of the Patents-in-Suit," corroborated by the Stanford NPE Litigation Database and PatSnap's non-practicing designation, and by five assertions of this patent (Roku 2021, Hisense 2022, Sony 2023, LG 2025, TCL 2026). I do not score this as high confidence because the assignment record itself — the evidence this task turns on — supplies only one strong signal, and I could not verify the '259's own reel/frame or the recording correspondent.

Signals tally: 1 present (known asserter / documented non-practice) · 1 unclear (repeat correspondent — no retrieved assignment correspondent) · 6 not present.

Verify at: https://assignmentcenter.uspto.gov/ (search patent number 9836259) — and, because the correspondent field matters most here, pull the 2017-05-15 assignment document image for the '259 rather than relying on the index row.

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Explicit verification gaps (flagging, not papering over)

1. ⚠️ The '259's own reel/frame was not retrieved. The two reel/frames in this report (028733/0064 for the '402; 042385/0202 for the '072) belong to sibling patents in the same family, not to the '259. Do not cross-assign them.
2. ⚠️ The assignment correspondent of record for the '259 was not retrieved, so signal 3 is scored unclear rather than absent. This is the single highest-value missing datum for the "repeat-player attorney" tell the task asks about.
3. ⚠️ Conflicting counts of the '259's assertions across sources (carried forward from earlier sections of this analysis): Stanford lists 2 cases; Google Patents' family block lists 5; this analysis independently confirmed the '259 in the Roku, Hisense, Sony, and LG complaints and could not confirm it in the TCL complaint. The verdict does not depend on the exact count, but do not cite "five" without the TCL Complaint (Dkt. 1) and its AO 120 form in hand.
4. ⚠️ Date discrepancy carried forward: prior sections in this file used both a 2026-09-16 and an April 26, 2026 "today." Neither affects the ownership analysis, whose last verified event is 2026-03-20.
5. ⚠️ The "3 Failed startup" render beside the Sony row on the Stanford NPE page is ambiguous and unexplained; I decline to treat it as a corporate-status finding.
6. No SEC filings to cross-check — Flexiworld Technologies, Inc. is privately held, so there is no 10-K/8-K paper trail for a privateering or portfolio-transfer analysis. That absence is itself why signals 6–8 resolve to "not present" rather than "affirmatively disproven."

I'll search USPTO and patent databases for the cited prior art of US 9,836,259.

The first pass returned family-level data rather than the '259 patent's own citation list. Let me target the patent's front-page "References Cited" section directly.

The uspto.report page appears to contain the front-page citation list. Let me pull more of its content and cross-check against other databases.

Prior-Art Analysis — US 9,836,259 B2 (Flexiworld Technologies)

0. Identification (literal match only)

Source: https://patents.google.com/patent/US9836259/en ; https://patents.google.com/patent/US20170078521 (priority/family data)

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1. Retrieval status — read this before the table (important limitation)

I was not able to retrieve the complete "References Cited" list (the front-page patent-citation list, plus the "Foreign Patent Documents" and "Other References" sub-lists) for 9836259 within the search budget. What I obtained was:

1. A partial front-page citation excerpt from uspto.report/patent/grant/9836259 (five U.S. patent entries shown below, beginning at US 6,556,313 — earlier entries in the same list were not surfaced by the search snippet).
2. Large volumes of family-level "cited by"/"similar documents" data that belong to other patents and must not be attributed to 9836259 (see §4, item D).

The patent text supplied to me in this matter is also truncated before the claims and before the front-page citation section, so the "References Cited" block could not be read from the authoritative source. I am therefore reporting a verified partial list rather than presenting a reconstructed full list.

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2. Cited U.S. patent documents retrieved (partial list)

All five entries below come from the citation table on uspto.report/patent/grant/9836259 (https://uspto.report/patent/grant/9836259). Inventor names are reproduced as the source rendered them. I could not verify the titles or subject matter of these references from the sources reached, and I am not going to guess at them.

Note on "Chang": entries #1–#3 list an inventor named Chang. Do not assume these are Flexiworld/William Ho Chang patents. Their numbers fall outside the Flexiworld portfolio range surfaced in the family data, and the source render is ambiguous. This needs confirmation before any common-ownership or §103(c)/§102(e) analysis is done.

Note on list position: the excerpt begins at US 6,556,313. Because citation lists on this page type are chronological, the list almost certainly contains earlier (1990s) U.S. references that were not surfaced, and I obtained zero foreign patent documents and zero "Other References" (NPL) entries.

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3. §102 analysis

Governing framework. 9836259 carries an effective filing date of 2000-11-20 (provisional) / 2001-11-18 (parent 09/992,413) and never contained a claim with a post-2013-03-16 effective filing date, so pre-AIA 35 U.S.C. §102 applies — i.e., §102(a), (b), and (e), not §102(a)(1)/(a)(2). Two consequences follow:

• (a) Art must predate the 2000-11-20 priority date to be §102 prior art at all. Any cited reference whose filing date postdates 2000-11-20 is not §102(a)/(e) art (and post-dates the invention), so it cannot anticipate.
• (b) The five retrieved references carry issue dates of 2003–2005, which is not the operative date. Under §102(e) a U.S. patent is prior art as of its filing date. That date is unverified for all five. If any of them was filed after 2000-11-20, it is not prior art to this patent.

Anticipation (single-reference, all-elements) conclusion. On the record retrieved, none of the five references anticipates claim 1, and I would not expect any image-processing reference of this vintage to do so. Verified claim 1 requires a combination of elements that the retrieved references were evidently cited against only in fragments:

1. A device that is a television, a wire-connectable television output controller, a projector, or a speaker (outputting video/audio);
2. a user interface, operating-system software, processor(s), and a wireless communication unit for establishing a WLAN connection;
3. receipt of security information via the interface (name, password, ID, PIN, IP address, or security key);
4. establishment of the WLAN connection using that security information;
5. after WLAN establishment, downloading application software/components from a server/host over a network for upgrading/updating/adding/modifying device features;
6. installing that software, facilitated by the OS;
7. receiving audio and/or video digital content from application/content servers operated by a digital content service over the Internet, facilitated by the installed software; and
8. processing the received content (one or more of color operation, image processing, scaling, resolution, interpolation, decoding, encoding) for output/playback.

At most, the §2 references are candidates for element 8 (and possibly the rasterization background in the specification). Element 8 in claim 1 is a "one or more of …" Markush-style processing limitation, so a reference teaching any single listed operation (e.g., interpolation or halftoning) could read on that limitation in isolation — but that reads on one limitation, not the claim. Without elements 2–7, there is no anticipation. At best these references are §103 combination fodder, and even then they supply nothing about WLAN onboarding via interface-entered security information or post-onboarding application download/install.

Where anticipation risk would actually live. Given this family's prosecution posture, the realistic §102 exposure for claim 1 is in one of two places, neither of which surfaced in my search:

• Admitted/specification prior art from 2000 describing network-connected televisions or output devices receiving content (the '259 specification itself frames the invention against "conventional" PDL-printer and network-printing systems, which is an implicit-admission risk under §102(a)/(b)).
• Continuation/priority-chain art — but the Flexiworld family members (US 7,609,402; US 7,944,577; US RE42,725; US 2002/0097415; US 2002/0062406; US 2002/0077980; and, in the sibling line, US 2017/0075636 A1, filed the same 2016-11-22 day) share the same priority date and inventors, so they are not §102 prior art to 9836259. They matter for §102(e)/double-patenting and for the written-description/enablement chain, not for anticipation. This is the single most common analytical error with this patent and I am flagging it explicitly.

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4. Contradictions and flags

• A. Date discrepancy. My operating context states today's date is 2026-09-16; this task states April 26, 2026. The two previously generated sections also used a 2026 time frame (most recent docket item: E.D. Tex. 2:26-cv-00229, filed 2026-03-20). I have not resolved this and flag it rather than silently picking one. It does not affect the prior-art analysis, because 9836259's operative date is 2000-11-20.
• B. Truncation of the authoritative text. The patent text furnished in this matter is cut off mid-sentence in the description ("…through a wired or wire"). It contains no claims section and no front-page citation list, so neither the full claim set nor the complete cited-art list can be confirmed from it. This is consistent with — and compounds — the uncertainty already recorded in the previously generated summary, which verified claim 1 only.
• C. Claim mapping is necessarily limited. Because only claim 1 is verified verbatim, I cannot state which other claims any reference might anticipate. Any statement mapping a reference to "claims 2, 5, 12, …" would be fabricated and is not offered.
• D. Citation-table contamination (significant). Much of what the searches returned as "citations" for 9836259 is not. Specifically, the citation tables rendered on the US 7,593,123 B2, US 6,363,452 B1, and US RE42,828 E1 pages include entries that merely cite Flexiworld patents, plus third-party items (e.g., Canon US 2011/0043856 A1 / US 8,860,983 B2; Samsung US 2011/0164270 A1 / US 8,823,966 B2; a Ricoh/Kuwano US 2011/0228304 A1) that sit in the "Cited By"/similar-documents position of those patents. Those 2010–2011 items post-date 2000-11-20 and cite patents issued in 2009, so they are citing references, not prior art to 9836259, and I have excluded them.

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5. Recommended verification path (to complete this task properly)

Because the authoritative citation list was unreachable here, the following would close the gap in one step each:

1. USPTO Patent Public Search (ppubs.uspto.gov) — full-text view of 9836259 with the front-page "References Cited" block intact.
2. USPTO Patent Center file wrapper (application 15/359,147) — the PTO-892 (Notice of References Cited) and PTO/SB-08 (IDS) forms give the examiner-cited vs applicant-cited distinction, which is decisive for a §102 opinion and is exactly what a front-page list does not tell you. This is the single highest-value document for this question.
3. Google Patents "Patent Citations" section for 9836259 — useful, but note that automated fetches have been truncating this page.
4. For each cited reference, pull its filing date (not issue date) to test §102(e) status against the 2000-11-20 priority date.

I hit the search-step limit before these could be retrieved; that limitation, not a lack of responsiveness, is why the citation list in §2 is incomplete.

I'll start by looking for the specific prior-art references associated with this patent and its family, since the fetched patent text was truncated before the "References Cited" section.

Let me pull the full "References Cited" list and any PTAB prior-art record for this patent.

Obviousness Analysis — U.S. Patent 9,836,259 under 35 U.S.C. § 103

0. Important scope caveat (read first)

You asked me to "use the results from the Prior Art section of this page." I have to flag a genuine gap rather than paper over it:

• The patent text I was given was truncated mid-sentence in the description (it ends at "...the output controller 230D may send the output data to the output device 220D through a wired or wire…"). It contains no "References Cited" section and no claims section.
• What the page did supply as "prior art" is a set of prior-art keywords only: output, output device, wireless, digital content, wireless output.
• A supplementary pull from uspto.report returned a partial numeric list of cited U.S. patents (numbers and issue dates, mostly 1997–1999), but without titles or inventors for most entries.
• I verified only claim 1 verbatim (from Flexiworld's portfolio page, consistent with the earlier-generated summary). I cannot analyze unissued independent claims I have not read.

So the analysis below is built on (i) claim 1 as verified, (ii) the citable prior-art record I actually retrieved, and (iii) well-established public knowledge of the 1996–2000 art. Where I am inferring rather than quoting, I say so. This is an analytical work product, not a legal opinion.

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1. Threshold issue that dominates everything: the effective filing date

This is the single most consequential issue, and it splits the analysis into two branches.

Branch A — claim 1 gets 2000-11-20. Pre-AIA § 103(a) applies. The critical date is "the time the invention was made," which permits swearing behind § 102(e) art. Prior art must predate ~Nov. 20, 2000.

Branch B — claim 1 does not get that date. The claim-1 combination of (a) a television/projector/speaker itself (not an information apparatus) (b) onboarded by user-entered WLAN security credentials at the device's own interface (c) downloading and installing application software at that device (d) thereafter receiving audio/video directly from an Internet content service (e) and decoding/scaling it locally, is a "smart connected media device" architecture. The 2001 specification you supplied is overwhelmingly directed to a different model: an information apparatus rasterizes content, generates intermediate output data, and sends it to an output controller for the residual RIP operations. That is a materially different architecture from a TV that pulls a stream from a content server. If the '259's claims are not supported by the 2000/2001 disclosure under § 112(a), they get the 2016-11-22 date — and then AIA §§ 102/103 apply (no swear-behind, and "otherwise available to the public" prior art counts). Under Branch B the claim is, in my assessment, very likely obvious and possibly even anticipated by the 2007–2016 smart-TV/streaming ecosystem.

Supporting evidence that Flexiworld itself treats the priority question as contested and claim-specific: in IPR2022-00775 (Unified Patents v. Flexiworld, on sibling patent US 9,836,257), the Board's Nov. 1, 2023 decision (Paper 41) turned entirely on whether Flexiworld could antedate the references — not on the merits of the combination. Flexiworld prevailed by proving conception on/about October 22, 2000, two days before the Olgaard reference's October 24, 2000 date, using provisional-draft file metadata plus inventor testimony. Sources: PTAB Litigation Blog summary ; the earlier litigation summary in this file.

Practical consequence: For the '259 specifically, no IPR was ever instituted or decided on the merits (confirmed in the previously generated sections). So there is no PTAB merits finding either way on this patent's claims. Anyone asserting obviousness must expect the Branch A/B fight to be litigated first.

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2. Person of ordinary skill in the art (PHOSITA)

A bachelor's degree in electrical engineering, computer engineering, or computer science (or equivalent), plus 2–3 years of experience in consumer electronics, home networking, and/or networked media delivery; or a Master's degree with ~1 year of experience. Such a person would have working familiarity with: IEEE 802.11/Wi-Fi (802.11b ratified 1999) and Bluetooth (1998–99), TCP/IP and HTTP, set-top boxes and DVRs, embedded/consumer operating systems, MPEG-2 and streaming media, and software/firmware update-over-network mechanisms. This is the conventional level applied in the related Flexiworld IPRs.

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3. Claim 1, element by element

Claim-construction notes that matter for § 103: "wireless output device" is defined by function, and the Markush-style "at least one of" language in C means a single reference or combination need only teach one of TV / output controller / projector / speaker. "Digital content service" is broad — a subscription streaming or download service. Nothing in claim 1 requires any particular protocol (Wi-Fi vs. Bluetooth is not specified for the WLAN link), any particular credential type (the list is "individually or in any combination"), or any particular order beyond "subsequent to having established the wireless local area network connection" in H(iii).

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4. The prior art available

4.1 References I verified are on the face of the '259 patent (partial list, numbers and dates only)

Per the uspto.report record I retrieved, the "References Cited" list includes (selection relevant to § 103):

Honesty note: the retrieved record gave me numbers and dates, not titles, for most of these. I am not attaching titles I cannot verify. I flag Moghadam (5,917,542) and the security reference (5,968,176) because their subject matter is corroborated by the IPR record and the field, respectively.

4.2 Prior art identified in the related Flexiworld IPRs

Source for the Roku grounds: Roku v. Flexiworld, Petitioner's Demonstratives, Ex. 1037.

The Roku grounds are directly on point for the "wireless device discovery / wireless output controller" concepts, and the Ikonen/Kammer/Peng combination addressed device advertising/discovery — the same family of disclosure from which the '259 descends.

4.3 Printed publications relied on in the family's IPR record

• Ellsworth, Barron, et al., Internet 1997 Unleashed (Sams.net, 4th ed. 1997) — relied on for the proposition that downloading and installing application software over the Internet was routine ("You can get a free copy of Internet Explorer from Microsoft's Web site or its FTP server").
• Gralla, How the Internet Works (1998) — same proposition for FTP client software.
• Hoffman, Data Compression in Digital Systems (1997) — relied on for digital set-top boxes that decoded MPEG video and output it to a television.

Source: PTACTS POR document, Unified v. Flexiworld (the '903 patent).

That POR is unusually valuable here because the petitioner's declarant expressly asserted that (i) digital set-top boxes processing digital content and outputting to a TV were known "by the time of the alleged invention," (ii) output controllers were described at a level of abstraction that covered TVs and PCs, and (iii) using operating software to download application software was routine and conventional. Those are exactly limitations A–G and H(iii)–H(iv) of claim 1.

4.4 Pre-November-2000 art from general knowledge (Branch A)

• Microsoft WebTV / WebTV Networks (commercial launch 1996) — set-top box giving a television Internet access, with a user-facing setup interface, network-based software and service updates, and remote server-delivered content. WebTV also maintained a substantial patent portfolio, though I am not confident enough of specific WebTV patent numbers to cite them here.
• TiVo (1999) and ReplayTV (1999) — network-connected television devices that downloaded program guide data and software updates over a network connection, then decoded and rendered digital audio/video.
• Satellite and cable set-top boxes — long-standing practice of downloading firmware and application code to the box over the network; well documented by 1997–2000.
• RealNetworks RealPlayer (1995+), MPEG-1/MPEG-2 and MP3 streaming — client-side decoding of streamed audio/video, which is claim element H(vi).
• IEEE 802.11b (1999) with WEP, and Bluetooth 1.0 (1999) — the WLAN onboarding practice of entering an SSID and a WEP key / passphrase was the standard, well-known method by 2000 and is literally recited in H(i).
• Network-attached audio devices — e.g., the Rio/Reciva-class and early network audio players, and the Sonos "Playback Device" line (per the Unified Patents record showing Sonos as an assignee in this technology space) demonstrate the speaker alternative in element C.

I want to be explicit: I am asserting these as general-knowledge art because they were widely documented commercial systems, not because I hold verified patent numbers for each. A validity challenge would need to paper these with actual references (product manuals, trade press, patents).

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5. The obviousness combinations

Combination I — Set-top/television content-receiving art + WLAN onboarding + app download (primary; strongest under Branch B)

References: Yamaguchi in view of Gu (and Garfunkel); or Ikonen in view of Kammer (and Peng) — the Roku grounds — optionally supplemented by Gralla/Ellsworth and the Hoffman set-top-box teaching.

• Yamaguchi / Ikonen supply the network-connected media output device that receives digital content from a server and renders it.
• Gu supplies the network/software architecture for delivering content or software to the device.
• Kammer/Peng supply the discovery/advertisement mechanism, which is the functional equivalent of the '259's "connecting to the network" behavior.
• Hoffman (1997) independently confirms that set-top boxes decoding digital content and outputting to a television were known — i.e., a POSITA would treat a "television that decodes received digital content" as an old, well-understood element.
• Gralla (1998) / Ellsworth (1997) confirm that downloading and installing application software from a server over the Internet was routine and conventional, satisfying H(iii)–H(iv) and eliminating any argument that app download at a consumer device was inventive.

Motivation to combine: (1) All references are in the same field of endeavor (networked delivery of digital media to consumer output devices) and are reasonably pertinent to the problem the '259 addresses. (2) KSR, 550 U.S. 398, 417 (2007) — where a technique has been used to improve one device, and a POSITA would recognize it would improve similar devices in the same way, the combination is obvious. Substituting a network-connected appliance for a phone-line/ethernet-connected one, or adding a wireless link to a wired device, is precisely such a predictable improvement. (3) Market forces expressly count as a motivation under KSR: consumer demand to deliver media to the living-room screen without a PC, and to eliminate the need to run cabling to a TV, is the articulated reason. In re ICON Health & Fitness, 496 F.3d 1374 (Fed. Cir. 2007) (consumer demand for networking a known device is a legitimate motivation). (4) Reasonable expectation of success — every element is a known, off-the-shelf building block; nothing in claim 1 requires an unexpected result.

Weakness to anticipate: Petitioners in the family IPRs have struggled with the priority date (IPR2022-00775) and, in that proceeding, with § 102(e) antedating rather than with the technical merits. Expect Flexiworld to respond that no reference teaches a television itself (rather than an information apparatus) performing the ordered sequence — a distinction the POR in the '903 IPR attacked head-on as "not a description of any improvement in technology" and as "mirror[ing] the approaches that had long been used to connect printers to wired networks."

Combination II — Olgaard + Moghadam (from IPR2022-00775)

• Olgaard (effective 2000-10-24) supplies the wireless data-communication/device-interaction teaching.
• Moghadam (US 5,917,542) — which appears both on the face of the '259 and in the IPR2022-00775 grounds — supplies transfer of image/media data to a remote device and the associated user interface and credentialing.

Motivation: both address wireless transfer of digital media to a destination device; combining them to have the destination device itself be the network-connected media player is a predictable substitution of known elements to achieve a known purpose.

Critical caveat: Flexiworld defeated this ground for the sibling '257 — but not on the merits. The Board found the '257 claims were conceived on/about 2000-10-22, two days before Olgaard's 2000-10-24 date, and therefore Olgaard was not prior art. That is a priority/antedating win, not a holding that the combination fails to render the claims obvious. Under Branch B (2016 date), the antedating defense disappears entirely and this combination is far more dangerous.

Combination III — Acharya + Griffiths (from IPR2022-00775)

Acharya's effective date (2000-12-22) postdates the claimed Nov. 20, 2000 priority date; it functioned as § 102(e) art relative to a 2001 filing. Flexiworld swore behind it as well. Significance: Acharya is a December 2000 reference — meaning that by the end of 2000, the art had already independently arrived at this architecture. That is strong evidence of the predictability of the claimed subject matter and of the level of ordinary skill. If Branch B applies, art of this vintage and later (2001–2016) provides a deep reservoir.

Combination IV — Internet-TV (WebTV) + networked DVR (TiVo/ReplayTV) + 802.11 onboarding + download-over-network of executable code (Branch A fallback)

Composition:

• WebTV → a television-centric Internet appliance with a user-facing setup interface and server-delivered content and updates (elements A, B, C, D, H(v)).
• TiVo/ReplayTV and satellite/cable STBs → downloading application/firmware code over a network and installing it at the device, plus local decoding/scaling of digital A/V (elements E, F, H(iii), H(iv), H(vi)).
• IEEE 802.11b (1999) / WEP → entering an SSID + key/passphrase to join a WLAN (elements G, H(i), H(ii)).
• Gralla 1998 / Ellsworth 1997 → routine download/install of application software over the Internet.

Motivation: The claim's only arguably distinctive feature is the specific ordered packaging — credentials first, then WLAN, then app download, then streaming. Each step is a known technique applied to a known consumer device. Courts have repeatedly held that the mere ordering or position of known steps is not patentable absent a new or unexpected result — see Perfect Web Techs. v. InfoUSA, 587 F.3d 1324, 1330 (Fed. Cir. 2009) and Wm. Wrigley Jr. Co. v. Cadbury Adams USA LLC, 683 F.3d 1356, 1361 (Fed. Cir. 2012). The sequence in claim 1 is dictated by physical necessity (you cannot download over a WLAN you have not joined), which is the paradigm of an obvious order. In re Aller also teaches that discovering an optimum or workable arrangement of known process steps is within the ordinary skill in the art.

Weakness: The speaker and projector alternatives in element C are, for a strict 2000 cut-off, somewhat thinner — network audio players existed but were not yet mainstream in home WLAN form in late 2000. The television and output controller wire-connectable to a television alternatives are the well-supported ones.

Combination V — "Reasonable expectation of success" based on contemporaneous independent invention

KSR and its progeny allow consideration of the predictability of the art and the near-simultaneity of independent solutions. Here the evidence is unusually strong: by Dec. 22, 2000 (Acharya) and into 2001 (the Roku/IPR references), independent actors had arrived at wireless, network-onboarded media output architectures. This is evidence that the '259's subject matter was the natural next step, not a leap.

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6. Secondary considerations (Graham factor 4)

I found no evidence in the retrieved record of:

• Unexpected results — nothing in the '259 disclosure identifies a technical surprise; the described advantages (smaller client, lower device-side processing load, lower bandwidth) are exactly the expected consequences of distributed processing, and the patent's own specification states them as such (see the patent summary in this file).
• Long-felt but unmet need / failure of others — the market (WebTV 1996, TiVo/ReplayTV 1999, then 2007–2016 streaming devices) moved in this direction quickly; the record does not show a long-blocked need.
• Industry praise or industry adoption of the patented design — the accused products (Roku, Hisense, Sony Bravia/PlayStation/Xperia, LG, TCL) implement their own architectures, which if anything points to independent development rather than copying.
• Licensing — I found no evidence of arms-length licensing that would support nexus.

*Caveat under In re GPAC, 57 F.3d 1573 (Fed. Cir. 1995) and Ormco Corp. v. Align Tech., 463 F.3d 1307 (Fed. Cir. 2006):* even a showing of commercial success would require a nexus to the claimed combination rather than to unclaimed features (e.g., content libraries, UX). Flexiworld has not, in anything I retrieved, made such a showing.

Procedural note relevant to weight: the Sony case was dismissed with prejudice by joint stipulation on 2025-05-29 (Dkt. 42) with each side bearing its own costs, and no merits or validity ruling issued. The Roku case closed 2022-03-24 without a merits ruling. So there is no judicial finding of non-obviousness to rely on — and equally no finding of invalidity.

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7. Contradictions and limits I am flagging rather than smoothing over

1. The "Prior Art section" of the fetched page did not contain a References Cited list — only the four prior-art keywords. The numeric reference list I used came from a separate uspto.report retrieval and is partial (it visibly cuts off mid-list at "5,974,401 | October 1999 | En…").
2. Date discrepancy on expiry. The Google Patents record in this file shows "2021-11-18 Anticipated expiration" and "Expired – Fee Related," while the uspto.report legal events show an "8th year" maintenance-fee payment followed by a lapse with effective date 2024-05-01. A 5 Dec. 2017 grant with a 3.5/7.5/11.5-year fee schedule does not cleanly produce a 2024-05-01 lapse. I cannot reconcile these; treat the exact lapse date as unverified. (This does not change the § 103 analysis, but it affects remedies and any damages theory.)
3. The Stanford NPE database lists only two cases for 9836259 (Sony 2:23-cv-00616 and Hisense 2:22-cv-00225), while the Google Patents family record and dockets show five. The '259's assertion in the Roku case is documented in that case's own joint status report; the LG (2:25-cv-00960) and TCL (2:26-cv-00229) cases are linked only at the family level from what I retrieved. (Carried forward from the earlier-generated section.)
4. No PTAB merits decision exists on the '259 itself. IPR2021-00713/00714, IPR2022-00775, and the '903-patent IPR are all against family members, not the '259. I found no CAFC appeal for the '259 in 2026.
5. I cannot analyze the dependent claims or any non-claim-1 independent claims, because the claims section was not in the fetched text and I could not retrieve it before exhausting my search budget. Flexiworld continuations in this family typically carry multiple independent device and method claims; the § 103 analysis must be repeated claim by claim.
6. The references in § 4.4 are asserted from general knowledge, not from a verified document set. Do not treat my WebTV/TiVo/RealPlayer statements as citations.

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8. Bottom line

The single most valuable line of attack is therefore not a new prior-art reference — it is the priority challenge. If the '259's claim-1 subject matter is not supported by the Nov. 20, 2000 provisional and the Nov. 18, 2001 non-provisional (and the 2001 specification you supplied, which is architecturally directed at an information apparatus rasterizing content for an output controller, gives substantial support for that argument), then the entire antedating defense that saved the family in IPR2022-00775 evaporates, and the claim sits in the middle of a very crowded field.

Recommended next steps before reliance: (1) obtain the full "What is claimed" text from USPTO Patent Center; (2) obtain the complete References Cited list with titles; (3) build an element-by-element claim chart for each independent claim against Combination I; and (4) develop the § 112(a) priority record for the specific claim-1 combination.