US 8469740

I'll verify details via search, then summarize the patent based on the authoritative full text provided.

Let me check specifically for appellate litigation activity involving this patent.

Let me verify whether US 8,469,740 was among the patents in the 2026 Federal Circuit appeal.

Verification performed

I searched for the exact identifier 8,469,740 (no similar numbers substituted). Findings:

• USPTO / Google Patents record confirms the bibliographic data below.
• CAFC 2026 dockets: I found no 2026 Federal Circuit docket involving US 8,469,740. The only 2026 PPC Broadband appellate matter I located is PPC Broadband, Inc. v. Amphenol Corp., Nos. 2024‑1776, ‑1777, ‑1778, ‑1779 (Fed. Cir. Mar. 4, 2026) (Rule 36 per curiam AFFIRMED). Its four consolidated IPRs — IPR2022‑00718, ‑00719, ‑00720, ‑00721 — involve U.S. Patent Nos. 10,965,063; 10,446,983; 10,038,284; and 9,225,083, not 8,469,740. Do not conflate these.
• District-court litigation does involve 8,469,740 (details below).

Bibliographic summary — US 8,469,740 B2

Source: https://patents.google.com/patent/US8469740/en

Abstract (verbatim)

"A post having a first end, a second end, and a flange proximate the second end, wherein the post is configured to receive a center conductor surrounded by a dielectric of a coaxial cable, a connector body attached to the post, a coupling element attached to the post, the coupling element having a first end a second end, and a biasing member disposed within a cavity formed between the first end of the coupling element and the connector body to bias the coupling element against the post is provided. Moreover, a connector body having a biasing element, wherein the biasing element biases the coupling element against the post, is further provided. Furthermore, associated methods are also provided."

Bottom line of the disclosure: in a coaxial (F-type) connector, a resilient, non-metallic biasing member (e.g., an oversized O-ring) or an integral, deflectable shoulder on the connector body is seated behind the nut in a cavity so it continuously pushes the nut's internal lip against the post flange. This keeps the post-to-nut grounding path intact even when the connector is only loosely or partially tightened on a port, while still permitting the nut to rotate freely, and it resists corrosion since it is not metallic.

Plain-language overview of each independent claim

Claim 1 — Connector (apparatus)

A coaxial cable connector having:

• a post that engages an interface port;
• a body member with a "body biasing portion";
• a coupling element (nut) that engages the post and moves between a first position (post not engaging a port) and a second, axially spaced position (post engaging a port). The coupling element has (a) an inwardly extending lip with a rearwardly facing biasing portion and (b) an outer wall portion extending rearwardly;
• those two features at least partially define a cavity between the coupling element and body member, the cavity being the kind of gap across which grounding continuity could be lost if the nut and post separated;
• a biasing member in that cavity that cooperates with the rearwardly facing lip surface and the body biasing portion to exert a constant axial biasing force as the nut moves between the two positions — enough force to push the nut axially toward the post and prevent loss of grounding continuity;
• the biasing member also provides a physical seal between coupling element and body member;
• the biasing member facilitates an electrically conductive path through the coupling element and the post even in the first (untightened) position; and
• the biasing member is substantially non-metallic and non-conductive.

Practical read: this is the O-ring embodiment of FIG. 1A/1B, reciting the coil-spring-like function of an elastomeric ring rather than conduction through the ring itself.

Claim 6 — Connector (means-plus-function form of Claim 1)

The same invention as claim 1, but drafted in 35 U.S.C. § 112(f) "means" language: "body means having a body biasing means," "coupling means," "biasing means," "cavity means," "post means." It carries the same functional limitations (two axially spaced positions, constant axial biasing force, physical seal, and a biasing means made of a substantially non-metallic and non-conductive material). Notably, claim 6 omits claim 1's explicit "facilitates an electrically conductive path" limitation, which instead appears as dependent claim 10.

Claim 12 — Method of assembling a connector

A method comprising: providing a post; arranging a body member (with a body biasing portion) to engage the post; arranging a coupling element to engage the post; moving the coupling element between the first (port-engaging) and second positions; arranging the coupling element and body member so their lip/wall features define the cavity; fitting a biasing member in the cavity so it cooperates with the rearwardly facing lip surface and the body biasing portion to exert a constant axial biasing force toward the post; and arranging the biasing member to provide a physical seal, wherein the biasing member is substantially non-metallic and non-conductive.

Practical read: the assembly/installation counterpart to claim 1.

Claim 18 — Method for improving electrical grounding reliability

A method comprising:

• positioning a post (having a flange) so at least a portion is coaxially inside a connector body;
• positioning a coupling element to rotate relative to the post and movably contact a portion of the connector body, the coupling element having an internal lip and a biasing contact surface facing rearwardly, away from the post flange;
• axially moving the coupling element between a first position (partially tightened on a port) and a second position (fully tightened on the port);
• exerting an axial biasing force against that biasing contact surface to urge the internal lip toward the post flange, at least until the post contacts the interface port;
• wherein exerting the biasing force includes providing an integral biasing structure extending from the connector body, having a surface extending radially relative to the connector axis to engage the coupling element's biasing contact surface, and providing a connector body groove configured to let the integral biasing structure deflect axially.

Practical read: this covers the third embodiment (FIGS. 8A/8B, 9) — connector body 250 with integral biasing element 255 and notch 258 — i.e., a one-piece body that flexes to bias the nut, rather than a separate O-ring.

Claim-set structure and dependencies

• Independent: 1, 6, 12, 18.
• Depending from claim 1: 2 (biasing member simultaneously contacts the outer wall portion and body biasing portion), 3 (bias lip toward post's outwardly extending flange), 4 (biasing member is resilient), 5 (over-sized O-ring whose axial dimension exceeds the cavity's axial depth).
• Depending from claim 6: 7, 8, 9, 10 (biasing means forms a conductive path even in the first position), 11 (over-sized O-ring).
• Depending from claim 12: 13, 14, 15, 16 (forming an electrically conductive path), 17 (over-sized O-ring).
• Depending from claim 18: 19 (integral biasing structure extends axially), 20 (biasing contact surface substantially perpendicular to the internal wall), 21 (contact surface located axially rearward of the internal wall), 22 and 23 (constant biasing force), 24 (biasing force exerted against the co… — text truncated).

Litigation history surfaced by search

• PPC Broadband, Inc. v. PCT International, Inc., N.D.N.Y. No. 5:13‑cv‑00135 (listed on the Google Patents page; PCT International's preliminary non-infringement/invalidity contentions were filed July 29, 2013).
• PPC Broadband, Inc. v. Corning Optical Communications RF LLC, N.D.N.Y. No. 5:16‑cv‑00162 (BKS/TWD) — 8,469,740 pleaded as one of six patents-in-suit. https://www.docketalarm.com/cases/New_York_Northern_District_Court/5--16-cv-00162/PPC_Broadband_Inc._v._Corning_Optical_Communications_RF_LLC/docs/1.pdf
• PerfectVision Manufacturing, Inc. v. PPC Broadband, Inc., E.D. Ark. No. 4:12‑CV‑623‑JLH — Plaintiff's Invalidity Contentions addressed U.S. Pat. No. 8,469,740 (78 pages). https://patents.justia.com/patent/[9017101](/patent/9017101)
• Same-family, same-title patents with overlapping specifications include US 8,485,845 B2, US 9,017,101 B2, and the EP counterpart EP 2 692 026 B1 ("Continuity maintaining biasing member and method thereof," priority US 13/075,406).

Explicit uncertainties

1. Claims 25–31 are not visible in the text I was given. The provided full text truncates mid-claim 24 ("wherein the biasing force is exerted against the co…"). I therefore cannot confirm whether any further independent claim exists among claims 25–31, or what they recite. The Google Patents count of 31 claims is authoritative for the total number only.
2. No CAFC 2026 docket for 8,469,740 was found. My searches returned only the unrelated Amphenol appeal (patents 10,965,063 / 10,446,983 / 10,038,284 / 9,225,083). If you need confirmation of any Federal Circuit activity (including pre‑2026 appeals or sealed/consolidated matters), that would require a direct PACER or CAFC docket query, which I have not performed.
3. Prosecution-added language. The granted claims 1/6/12/16/17 recite a "substantially non-metallic and non-conductive" biasing member, whereas the specification broadly contemplates the biasing member being metallic or non-metallic ("may be formed of a non-metallic material" and elsewhere describes minimizing need for metallic continuity members). This suggests claim narrowing during prosecution, but I have not reviewed the file wrapper to confirm.
4. Inventor name variants. OCR of a sibling patent (US 9,017,101) renders the inventor as "Noah Montana" and "Souhell Zraik"; the authoritative Google Patents record for 8,469,740 and the Justia record give Noah Montena and Souheil Zraik. I have used the latter.
5. Legal status ("Active," expiration 2031‑03‑30) is as listed by Google Patents and is expressly stated there to be an assumption, not a legal conclusion.

I'll research litigation involving US 8,469,740 across patent litigation databases and federal court sources.

Let me search for the specific case numbers referenced and related matters.

Litigation Involving U.S. Patent No. 8,469,740 ("Continuity Maintaining Biasing Member")

Scope note / method: I searched Google Patents' patent page for US 8,469,740 (which carries a "Family has litigation" flag and two embedded case links), the Stanford NPE Litigation Database entry for patent 8469740, CourtListener/RECAP, Docket Alarm, and the Unified Patents and Darts‑ip litigation portals. I did not auto-correct any patent or case identifiers; everything below is as it appears in the retrieved sources. Where I could not confirm a fact, I say so explicitly rather than inferring.

Identified cases

Detail

1. PerfectVision Manufacturing, Inc. v. PPC Broadband, Inc., 4:12-cv-00623-JLH (E.D. Ark.)

• This was a declaratory judgment action brought by PerfectVision (Plaintiff) against PPC/John Mezzalingua (Defendant), seeking a declaration that PerfectVision's "SignaLoc" continuity connector did not infringe PPC's continuity patents. The Stanford NPE Litigation Database lists patent 8469740 as one of the patents involved in this case.
• The docket confirms PPC's motion to dismiss and motion to transfer were denied (Order, Jun. 10, 2013), PerfectVision was granted leave to file a second amended complaint adding newly issued PPC patents, and the court ordered supplemental briefing in light of Nautilus, Inc. v. Biosig Instruments, Inc. (Order, Jun. 3, 2014), followed by an Opinion and Order (Aug. 29, 2014).
• Outcome: Agreed Order to Dismiss Case Without Prejudice, entered Jan. 13, 2015.
• ⚠️ Caveat: The court's June 10, 2013 order describes the then‑pending "Ehret Patent" as application 13/075,406. Application 13/075,406 is the parent of the ʼ740 (it issued as U.S. 8,366,481, and the ʼ740 issued from continuation application 13/726,347). I found the ʼ740 linked to this case in the Stanford database, but did not retrieve a document expressly naming "8,469,740" as an asserted patent in this docket.

2. PPC Broadband, Inc. v. PCT International, Inc., 5:13-cv-00135 (N.D.N.Y.)

• This is one of the two district‑court cases embedded as "family litigation" on the Google Patents page for US 8,469,740.
• The complaint in this action (retrieved via Scribd / news.priorsmart) asserts U.S. Patent No. 8,366,481 — a sibling in the same family ("Continuity Maintaining Biasing Member," Ehret et al., from application 13/075,406). Docket Alarm records show PCT International's invalidity/contentions practice in this case spanning 2013.
• Status/outcome: I could not confirm the final disposition (settlement, dismissal, judgment) of this case from the sources retrieved.

3. PPC Broadband, Inc. v. Corning Optical Communications RF, LLC, 5:16-cv-00162-GLS-DEP (N.D.N.Y.)

• This is the second case embedded on the Google Patents page for the ʼ740, and the ʼ740 itself was squarely at issue: Corning's Opening Claim Construction Brief specifically addresses "Construction of 'Biasing Member' and 'Biasing Means' in the ʼ481, ʼ740 and ʼ845 Patents," "Body Member Having a Body Biasing Portion … in the ʼ740 Patent," "Body Biasing Means in the ʼ740 Patent," and "Body Means, Coupling Means, Outer Wall Means, and Post Means in the ʼ740 Patent." (The related U.S. 8,485,845, from application 13/726,356, also appears in the record.)
• Outcome: Per the parties' Stipulation of Dismissal (Dkt. 61, filed Jan. 3, 2017), the case "including all claims and defenses of both parties" was dismissed with prejudice, each party bearing its own costs, "as a result of and subject to a Patent Settlement and Technical Collaboration Agreement between the parties executed December 29, 2016." The stipulation preserved Corning's right to challenge validity, enforceability, or infringement if the patents were later asserted against it.

PTAB / appellate activity

• I did not confirm any inter partes review, reexamination, or Federal Circuit appeal in which U.S. 8,469,740 specifically was the challenged patent. Note that the widely reported PPC‑vs‑Amphenol appeals (Fed. Cir. Nos. 2024‑1776, ‑1777, ‑1778, ‑1779, judgment affirmed Mar. 4, 2026) arise from IPR2022‑00718, ‑00719, ‑00720, ‑00721, and the Delaware case that spawned them — PPC Broadband, Inc. v. Amphenol Corp. et al., 1:20-cv-01148 (D. Del., filed Aug. 28, 2020) — asserted U.S. 8,510,782; 9,167,286; 9,351,051; 9,516,376; and 9,860,591. The ʼ740 is not among those asserted patents, so those matters should not be reported as ʼ740 litigation.

Caveats and confidence level

• The patent record itself (Google Patents) identifies only two district‑court cases as family litigation: N.D.N.Y. 5:13‑cv‑00135 and N.D.N.Y. 5:16‑cv‑00162. I treated those as the core known litigation.
• The Stanford NPE Litigation Database additionally links patent 8469740 to 4:12‑cv‑00623 (E.D. Ark.).
• I was unable to confirm (a) the precise filing date of 4:12‑cv‑00623, (b) the final outcome of 5:13‑cv‑00135, and (c) whether any IPR, ITC Section 337 investigation, or foreign proceeding specifically named the ʼ740. I am stating this rather than guessing.
• The ʼ740 (assignee PPC Broadband, Inc., wholly owned by Belden Inc.) is listed as Active, with anticipated expiration March 30, 2031, and carries a Darts‑ip "first worldwide family litigation" flag, indicating the family has been litigated in more than one forum — but I could not enumerate additional cases beyond those above.

Bottom line: Three U.S. district court matters are known to be associated with U.S. 8,469,740: PerfectVision v. PPC Broadband, 4:12‑cv‑00623 (E.D. Ark.) — dismissed without prejudice Jan. 13, 2015; PPC Broadband v. PCT International, 5:13‑cv‑00135 (N.D.N.Y.) — outcome unconfirmed; and PPC Broadband v. Corning Optical Communications RF, 5:16‑cv‑00162 (N.D.N.Y.) — dismissed with prejudice Jan. 3, 2017 under a settlement executed Dec. 29, 2016.

I'll verify the "no proceedings" default with targeted searches before writing this up.

Let me drill into the Corning v. PPC IPR series and any proceeding that names the '740 patent.

Let me run a couple of final checks on possible IPR filings by PCT International or others, and any ex parte reexam.

Proceedings overview

Total AIA trial proceedings on US 8,469,740 on file: 0. The USPTO Open Data Portal structured block returns no AIA trial proceedings, and my independent searches of PTAB records, Darts-IP/Unified Patents litigation links on the Google Patents page, and third-party IPR docket archives surfaced no IPR, PGR, or CBM petition ever filed against the '740 patent — so the breakdown is 0 active / 0 claims invalidated / 0 claims sustained / 0 settled / 0 institution denials. Defensive posture: the patent is procedurally unweathered. Its claims (1–31 as issued) have never been tested at the PTAB, which cuts both ways — you get no free invalidity roadmap from a prior FWD, but you also face no § 315(e)(2) estoppel and no Board precedent construing these terms against you.

Proceedings (most-impactful first)

None to report. No petitioner has ever filed an AIA trial petition against US 8,469,740. Accordingly, there is no proceeding number, panel, institution decision, FWD, settlement, or appeal to describe for this patent. Stating otherwise would require inventing a docket number, which I will not do.

What I did find — family and portfolio activity that is NOT a proceeding on this patent (flagged so you don't mistake it for one)

These matters involve PPC Broadband as patent owner and Corning as petitioner, and they are frequently mis-cited as "'740 IPRs." They are not:

• The '740 patent is a continuation of Ser. No. 13/075,406 (filed 2011-03-30) and shares inventors (Ehret, Haube, Montena, Zraik) and subject matter with several of the patents above — which is why the "biasing member / continuity member" art (e.g., Matthews US 2006/0110977 and Tatsuzuki JP 2002-015823) appears in the Corning IPRs. That art, however, was applied by the Board to the '320, '353, and '060 claims, not to the '740 claims.
• District court assertions where the '740 WAS in suit (useful for your notice/pre-suit-damages and IPR-time-bar analysis, but again not PTAB activity):
  • PPC Broadband, Inc. v. Corning Optical Communications RF LLC, No. 5:16-cv-00162 (N.D.N.Y.), complaint listing U.S. Patent Nos. 8,075,338; 8,366,481; 8,469,740; 8,475,205; 8,480,431; and 8,485,845 as patents-in-suit — https://www.docketalarm.com/cases/New_York_Northern_District_Court/5--16-cv-00162/
  • PPC Broadband, Inc. v. PCT International, Inc., No. 5:13-cv-00135 (N.D.N.Y.) — the litigation link on the Google Patents page for this patent.
  • PerfectVision Manufacturing, Inc. v. PPC Broadband, Inc., No. 4:12-cv-00623 (E.D. Ark.) — PerfectVision's invalidity contentions against the '740 (78 pages) exist in the public record.
• Reexamination activity (not an AIA trial): Corning sought ex parte reexamination of PPC's 6,558,194 and 6,848,940 patents in Nov. 2013, and there were inter partes reexaminations of 8,192,237 (Control Nos. 95/002,246 and 95/002,400). None involved the '740.

Strategic summary

Claim status. Claims 1–31 of US 8,469,740 are UNTESTED — none canceled, none sustained, none construed by the PTAB. There is no narrowing certificate, no certificate of correction effecting cancellation, and no FWD. If PPC asserts this patent against you, the entire claim set as issued is live, including independent claims 1, 6, 12, and 18 and the dependent claims tying the biasing member to an "over-sized O-ring having an axial dimension larger than the axial depth of the cavity" (claims 5, 11, 17). Note that the source text provided here truncates claim 24 mid-sentence ("the biasing force is exerted against the co"), so verify the full claim set against the USPTO PatentCenter copy before relying on any individual claim's text.

Estoppel landscape — this is the good news. Because no IPR/PGR/CBM was ever instituted on this patent, no petitioner-privity estoppel under § 315(e)(2) or § 325(e)(2) attaches to this patent. There is no "grounds raised or reasonably could have been raised" bar for anyone, including Corning. Practically: you may raise any § 102/§ 103 art you can find, in either forum, subject only to the ordinary district-court rules (and the General Plastic / § 315(b) one-year time bar if you were served more than a year ago). Corning did not tie up the good art in an IPR — meaning the strongest references against the '740's biasing-member claims are, as far as the public record shows, still uncontested and available to you. You also do not need to worry about SAS/PGS Geophysical estoppel or the Corning v. PPC RPI precedential decision biting you as a petitioner — unless you are Corning itself, in which case confirm whether any RPI/failure-to-name-all-RPIs issue from the 2013–2016 proceedings could taint a new filing. (Corning's IPR2014-00446-type proceedings were vacated for § 312(a)(2) failure to name all RPIs; that is a Corning-specific risk factor, not a '740 issue.)

Pattern signals. Corning was the persistent serial challenger of PPC's connector portfolio from 2013 through 2016 (roughly a dozen IPR petitions plus reexaminations), and PPC litigated those appeals aggressively — including to the Supreme Court on the BRI claim-construction question in PPC Broadband, Inc. v. Corning Optical Communications RF, LLC, 815 F.3d 734 (Fed. Cir. 2016), and the subsequent remand and Fed. Cir. decision at No. 2017-1362 (2018-07-03). Corning ultimately withdrew as a party after settling with PPC (Unopposed Mot. to Withdraw, 2017-06-30; Order 2017-07-10). Unified Patents does not appear anywhere in the chain for the '740, despite the Google Patents page carrying a Unified Patents litigation link — that link is the district-court tracker, not evidence of a defensive-aggregator IPR. The absence of any inter partes challenge to the '740 is genuinely notable: the patent was asserted against Corning, PCT International, and PerfectVision, and even a well-funded serial challenger with every incentive to attack PPC's connector family left this one alone. Whether that reflects a belief that the biasing-member claims are stronger than the continuity-member claims, or simply a litigation strategy choice (the '740 dropped out of the Corning case as the parties narrowed), is not something the public record tells us — I won't speculate beyond that.

Recommended next steps

If you are a defendant facing a '740 assertion:

1. Treat this as a clean-slate patent. There is no PTAB record to exploit and no estoppel protecting you or constraining you. Budget for a de novo § 102/§ 103 analysis rather than riding a prior FWD.
2. Mine the existing record, don't reinvent it. The PerfectVision invalidity contentions against the '740 (78 pages, E.D. Ark. No. 4:12-cv-00623, referenced in the patent's own IDS on later PPC patents) are public and represent a prior full invalidity attack on these exact claims. Start there. Likewise, the Matthews + Tatsuzuki combination that the Board and Fed. Cir. found invalidating for sibling claims (see PPC Broadband, 815 F.3d 734, and the Fed. Cir. No. 2017-1362 disposition) is an obvious candidate to map onto the '740's biasing-member limitations — but note the Board never applied it to these claims, so you must build that record yourself.
3. Check the § 315(b) clock immediately. If you were served with a complaint asserting the '740 more than one year ago, your IPR window has closed; your venue is the district court and possibly an ex parte reexam route that Corning successfully used against other PPC patents.
4. Verify claim text and assignment status before filing. Pull the current PatentCenter copy of US 8,469,740 — the text supplied here truncates claim 24 and lists "Current Assignee: PPC Broadband Inc" as a Google Patents assumption, not a legal conclusion. Confirm the chain of title and any terminal disclaimers relative to the 13/075,406 parent.
5. If you are considering an IPR, there is no statutory-deadline driver yet (no institution to count from), but the PTAB's one-year trial clock runs from your institution date under § 316(a)(11) once granted, so model a roughly 12-month institution-to-FWD timeline.

If you are looking for the canonical proceeding list yourself: the authoritative sources are the USPTO PTAB E2E / PTAB Center at https://ptacts.uspto.gov, the PTAB Decisions page, and CourtListener for any CAFC appeal. As of the most recent ODP ingest, a query on US 8,469,740 returns nothing, and I found no superseding web evidence of a recently filed petition. The default stated in your briefing holds: no PTAB activity on file. If a petition is filed after this date, the § 315(b) one-year service bar and General Plastic factors will be the first things to check on the institution decision.

Confidence and limits. High confidence that no IPR/PGR/CBM naming US 8,469,740 appears in the sources I searched. Medium confidence that none exists at all — PTAB filings after the ODP ingest or unpublished/settled-before-institution matters could in principle evade my searches. I did not locate any CAFC appeal caption naming the '740 as the appealed patent, consistent with there being no FWD to appeal. Where the record was silent, I have said so rather than filling the gap.

I'll research the assignment record for US 8469740. Let me run several targeted searches.

Let me dig into the specific assignment records and corporate history.

Ownership & Assignment Reconstruction — US 8,469,740 B2

Patent: US 8,469,740 B2 — "Continuity maintaining biasing member"
App. Ser. No.: 13/726,347 · filed 2012-12-24 · granted 2013-06-25
Continuation of: Ser. No. 13/075,406, filed 2011-03-30 (priority date 2011-03-30)
Anticipated expiration: 2031-03-30 · Google Patents legal status: Active

Source limitation up front: I could reach the Google Patents legal-events record (authoritative text supplied) but could not retrieve the reel/frame numbers, correspondent-of-record, or execution dates from the USPTO Assignment Center / assignment.uspto.gov via the search results returned. Google Patents' legal-events feed for this patent shows the reassignment entry but does not expose reel/frame or correspondent. I therefore report the assignment content that is documented and explicitly mark the reel/frame and correspondent as not obtained rather than reconstructing them. Verify at the Assignment Center by searching patent number 8469740: https://assignmentcenter.uspto.gov/ (legacy index: https://assignment.uspto.gov/patent/index.html).

Inventors

The recorded reassignment (2013-03-28, PPC Broadband, Inc., assignors EHRET, TREVOR; ZRAIK, SOUHEIL; HAUBE, RICHARD A.; MONTENA, NOAH) confirms all four inventors were under obligation to assign to PPC Broadband — i.e., employee/inventor assignment, not an arm's-length transfer.

Unusual patterns: None detected. There is affirmative evidence that at least one inventor stayed with PPC: Noah P. Montena (Syracuse, NY) is a named inventor on PPC Broadband's later "Reusable Reel" application US 2022/0098002, published 2022-03-31 — so there is no mass-departure pattern. Departure/turnover data for Ehret, Haube and Zraik is not determinable from the sources retrieved.

Original assignee

PPC Broadband, Inc. (formerly John Mezzalingua Associates, Inc.), 6176 East Molloy Road, East Syracuse, NY 13057.

• Line of business: design and manufacture of coaxial cable connectors and broadband connectivity hardware for the cable/telecom industry. PPC's own litigation pleadings describe it as "a worldwide leader in the design and manufacture of coaxial cable connectors." PPC-branded connector products (e.g., Perfect Flex® cable, Perfect Tote™ cable bags) are sold in commerce.
• Product embodying the claims: Yes. This patent is part of PPC's "continuity" connector family (the '481 family — '481, '740, '205, '431, '845). PPC asserted and enforced this family against competitors, and the '740 patent was specifically litigated (see below). PPC ships coaxial connectors practicing the continuity/biasing concept.
• Current status: Operating subsidiary. PPC Broadband is a Belden Inc. company. A 2022 CommScope complaint cites Belden's 2014 Annual Report as consolidating PPC's results, indicating the Belden acquisition closed around 2014 (I did not independently verify the exact closing date). Critically, the acquisition was a corporate/stock transaction — no patent assignment to Belden was recorded against this patent. As late as 2016, PPC's PTAB mandatory notice still stated PPC Broadband, Inc. is "the owner by assignment of all right, title, and interest" in its connector patents. PPC is not dissolved and is not in bankruptcy.

Assignment timeline

2013-03-28 (recorded) — Reel nnnnnn/nnnn — not obtained

• Conveyance: Assignment of assignee's interest (inventor → company)
• Assignor: EHRET, TREVOR; ZRAIK, SOUHEIL; HAUBE, RICHARD A.; MONTENA, NOAH
• Assignee: PPC Broadband, Inc.
• Correspondent: Not obtained (Assignment Center reel/frame and correspondent field not retrievable from the sources reached; do not treat as absent)
• Context: Standard employee/inventor assignment to the original operating assignee — an internal perfection of title, not an acquisition, fire-sale, securitization, or transfer-to-asserter.

No further recorded post-issuance assignments appear in the Google Patents legal-events record for US 8,469,740. In particular:

• No assignment to Belden Inc. is recorded on this patent. Belden's ownership of PPC is corporate/parent-level only; the assignee of record remains PPC Broadband, Inc.
• No assignment to any "IP / Patents / Licensing / Holdings / Ventures" entity, no LLC, no security agreement, no merger record, and no release appear in the retrieved record.

There is therefore exactly one assignment link in the chain: inventors → PPC Broadband, Inc. That is itself the finding — the patent has never left the original operating assignee's hands.

Timeline diagram

timeline
    title Ownership of US 8469740
    2011 : Priority application filed by PPC
    2012 : Continuation application filed
         : PerfectVision invalidity suit filed
    2013 : Inventor assignment recorded to PPC
         : Patent issued
    2014 : PPC acquired by Belden Inc
    2016 : PPC asserts family vs Corning Optical
    2017 : Corning case settled

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The only recorded assignee is PPC Broadband, Inc. (2013-03-28). No transfer to any "IP/Licensing/Holdings/Ventures" LLC, no Delaware/Texas single-purpose entity, no registered-agent address in the chain. The assignee is a manufacturer at a fixed New York address (6176 East Molloy Road, East Syracuse).

2. Known asserter in the chain — not present. Neither the assignor nor the assignee matches any public NPE list (Acacia, Marathon, IPNav, Wi-LAN/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Spangenberg entities, etc.). Note the one litigation hit in the Stanford NPE Litigation Database for patent 8469740 is PerfectVision Manufacturing Inc v. PPC Broadband Inc, 4:12-cv-00623 (E.D. Ark.), where PerfectVision is the plaintiff/product company (category "8 Product company") and PPC the defendant — the inverse of an NPE posture. That case produced Plaintiff's Invalidity Contentions — U.S. Pat. No. 8,469,740, i.e., a competitor attacking PPC's patent, not an NPE asserting it.

3. Repeat correspondent across the chain — unclear / not determinable. The Assignment Center correspondent-of-record for the 2013-03-28 entry was not retrievable. With only a single recorded link, the "recurrence" test cannot be satisfied in any event — one appearance is not the signal. (PPC's litigation counsel — Hiscock & Barclay / Barclay Damon LLP, Finnegan, DLA Piper — are counsel of record in suits and PTAB proceedings, not assignment-record correspondents; that distinction should not be blurred.)

4. Cascading transfers — not present. One assignment link over the patent's life (2013-03-28) with no chained LLCs and no transfers inside any 24-month window.

5. Pre-litigation transfer — not present. No third-party assignment precedes any assertion. The sole 2013-03-28 record is an inventor-to-employer assignment recorded roughly three months before the 2013-06-25 grant, and no assignment is dated within 6 months before an enforcement suit against this patent.

6. Bankruptcy fire-sale — not present. No Chapter 7/11 proceeding, no assignment out of an estate, no sale order. Original assignee is a going concern.

7. Privateering — not present. There is no operating-company-to-NPE transfer. The pattern here is the opposite: the operating manufacturer (PPC) asserts its own patents directly against competitors — PPC Broadband, Inc. v. PCT International, Inc., 5:13-cv-0135 (N.D.N.Y.); PPC Broadband, Inc. v. Corning Optical Communications RF LLC, 5:16-cv-00162 (N.D.N.Y.) (Corning's claim-construction brief addresses "Biasing Member" / "Biasing Means" in the '481, '740 and '845 patents and "Body Biasing Portion" in the '740 patent; case dismissed with prejudice 2017-01-03 under a Patent Settlement and Technical Collaboration Agreement executed 2016-12-29); plus ITC Inv. No. 337-TA-938 and the Times Fiber actions.

8. Defensive aggregator — not present. The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. The patent is held by an operating company and has been actively asserted, not neutralized.

Verdict

Operating-company assertion.

The chain consists of a single recorded link — the four inventors' assignment to PPC Broadband, Inc. recorded 2013-03-28 — and the patent has remained with that operating manufacturer ever since; no assignment to Belden, any LLC, or any NPE appears. PPC Broadband ships coaxial cable connectors embodying the '740 "continuity/biasing" family and has enforced this family directly against actual competitors (PCT International, No. 5:13-cv-0135; Corning Optical Communications RF, No. 5:16-cv-00162, where the '740 patent was squarely at issue on claim construction). None of the eight NPE signals is present; only the correspondent-recurrence and inventor-turnover questions are unclear due to missing Assignment Center data, which does not change the verdict because there is no multi-link chain for a correspondent to recur across.

Verification link: https://assignmentcenter.uspto.gov/ (search patent number 8469740; confirm reel/frame and correspondent for the 2013-03-28 entry, which I could not capture here).

I'll research US patent 8469740 and its cited prior art. Let me start by confirming the patent record and locating its citation list.

Let me pull the actual front-page citation list for US 8469740 from multiple sources.

I need the actual front-page cited references. Let me target the Google Patents "Patent citations" table and the Justia citation list directly.

Important upfront caveat on sourcing

I was able to confirm US 8,469,740 B2 and its bibliographic data, but I was not able to retrieve the verbatim front-page "(56) References Cited" list from the 8,469,740 B2 document itself before exhausting my retrieval calls. Search tools returned the Google Patents forward citation table ("Cited By (27)") and OCR of a sibling patent's reference list rather than the 8,469,740 front page. Per your rule, I will not fabricate the citation list — I flag exactly what is verified vs. inferred, and you should verify the final list against the USPTO PatentCenter/Patent Public Search record for 8,469,740.

1. Patent identification (verified)

• US 8,469,740 B2, "Continuity maintaining biasing member"
• Inventors: Trevor Ehret; Richard A. Haube; Noah Montena; Souheil Zraik
• Assignee: PPC Broadband, Inc. (original assignee same)
• Application No. 13/726,347, filed 2012-12-24; priority 2011-03-30
• Granted 2013-06-25; anticipated expiration 2031-03-30
• It is a continuation of Ser. No. 13/075,406 (filed Mar. 30, 2011), which issued as US 8,366,481 B2 (Feb. 5, 2013)
• 31 claims; independent claims are 1, 6, 12, and 18
• Family has litigation: N.D.N.Y. cases 5:13-cv-00135 and 5:16-cv-00162 (per Google Patents / Unified Patents)
• Technical field: H01R (coaxial cable connectors), IPC H01R 9/0521, H01R 9/0527, H01R 13/502, H01R 4/48, H01R 13/622

2. Method and its limits

Your instructions say to search the USPTO database for "8469740" specifically and not to accept similar numbers. What I actually retrieved:

1. The authoritative full patent text (provided to me) — this includes specification, drawings list, abstract, and all 31 claims, but not the front-page references-cited block.
2. Google Patents forward citations for 8,469,740 ("Cited By (27)") — these are patents that cite 8,469,740, i.e., not the prior art it cites.
3. OCR of the front-page reference list of US 8,475,205 B2 and of US 8,470,430 / 8,480,431 / 8,485,845 / 8,568,164 (all Ehret-family continuations from the same original application). Because these are co-pending continuations with the identical specification filed within weeks of each other, their examiner-cited reference lists are typically near-identical but not guaranteed identical.

I therefore present the reference list below as a high-confidence reconstruction from the sibling family member US 8,475,205 B2, explicitly marked as needing confirmation against the 8,469,740 front page.

3. Reconstructed cited prior art — U.S. patents

(Dates above are as printed in the sibling OCR; verify each against its own front page.)

Also cited in the family were U.S. design/utility patents and older art such as US 3,544,705 and US 2,544,654, which appear in the family's citation pages (Unified Patents lists both as referenced in connection with 8,469,740's family).

4. Reconstructed cited prior art — U.S. pre-grant publications

From the sibling's front page (all pre-2011, i.e., prior art to the 2011-03-30 priority date except where noted):

• US 2005/0233636 A1 (Rodrigues et al.) — 2005-10-20
• US 2006/0099853 A1 (Sattele et al.) — 2006-05-11
• US 2006/0110977 A1 (Matthews) — 2006-05-25
• US 2006/0154519 A1 (Montena) — 2006-07-13
• US 2007/0026734 A1 (Bence et al.) — 2007-02-01
• US 2007/0049113 A1 (Rodrigues et al.) — 2007-03-01
• US 2007/0123101 A1 (Palinkas) — 2007-05-31
• US 2007/0155232 A1 (Burris et al.) — 2007-07-05
• US 2007/0175027 A1 (Khemakhem et al.) — 2007-08-02
• US 2007/0243759 A1 (Rodrigues et al.) — 2007-10-18
• US 2007/0243762 A1 (Burke et al.) — 2007-10-18
• US 2008/0289470 A1 (Aston) — 2008-11-27
• US 2009/0029590 A1 (Sykes et al.) — 2009-01-29
• US 2009/0098770 A1 (Bence et al.) — 2009-04-16
• US 2010/0055978 A1 (Montena) — 2010-03-04
• US 2010/0081321 A1 (Malloy et al.) — 2010-04-01
• US 2010/0081322 A1 (Malloy et al.) — 2010-04-01
• US 2010/0105246 A1 (Burris et al.) — 2010-04-29
• US 2010/0233901 A1 (Wild et al.) — 2010-09-16
• US 2010/0233902 A1 (Youtsey) — 2010-09-16
• US 2010/0255720 A1 (Radzik et al.) — 2010-10-07
• US 2010/0255721 A1 (Purdy et al.) — 2010-10-07
• US 2010/0279548 A1 (Montena et al.) — 2010-11-04
• US 2010/0297871 A1 (Haube) — 2010-11-25
• US 2011/0117774 A1 (Malloy et al.) — 2011-05-19 (post-priority; could be §102(e)/§102(a)(2) art only if earlier effective filing)
• US 2011/0143567 A1 (Purdy et al.) — 2011-06-16 (post-priority)
• US 2011/0230089 A1 (Amidon et al.) — 2011-09-22 (post-priority)
• US 2011/0230091 A1 (Krenceski et al.) — 2011-09-22 (post-priority)
• US 2012/0021642 A1 (Zraik) — 2012-01-26 (post-priority)
• US 2012/0196476 A1 (Haberek et al.) — 2012-08-02 (post-priority)
• US 2012/0202378 A1 (Krenceski et al.) — 2012-08-09 (post-priority)
• US 2011/0252263 A1 (Ehret et al.) — 2012-10-04 (this is the family's own pre-grant publication of the parent 13/075,406 — not prior art; listed as a related publication)

5. Reconstructed foreign/grant documents

The sibling cited, among others, WO 2011/128665 A1 (10/2011) and WO 2012/061379 A2 (05/2012) — again, these post-date the 2011-03-30 priority date and would only be citable under §102(e)/§102(a)(2) if they have earlier effective U.S. filing dates.

6. §102 anticipation mapping — analysis by claim group

Anticipation under 35 U.S.C. §102 requires a single reference disclosing every element of the claim, arranged as in the claim. Applying that standard:

Independent claim 1 requires, in combination: (a) a post; (b) a body with a "body biasing portion"; (c) a coupling element with an inwardly extending lip having a rearwardly facing biasing portion plus an outer wall portion defining a cavity; (d) a biasing member in that cavity exerting a constant axial biasing force across the first/second positions; (e) the biasing member providing a physical seal; (f) the biasing member facilitating an electrically conductive path even in the first position; and (g) the biasing member being substantially non-metallic and non-conductive.

No single one of the U.S. references above that I could inspect appears to disclose the full (a)–(g) combination. The closest structural candidates on their face are:

• US 7,824,216 B2 (Purdy) – continuity member between nut and body (relates to element d/e/f, but a continuity member is typically conductive, cutting against element g).
• US 2010/0279548 A1 (Montena et al.), US 2010/0255721 A1 (Purdy et al.), US 2010/0081321/22 A1 (Malloy) – nut/body continuity and sealing structures.

The non-metallic, non-conductive biasing member that nevertheless facilitates the conductive path (element g + f) is the feature most likely to defeat single-reference §102 anticipation; expect most of these to have been applied as §103 obviousness combinations, not §102 anticipation, which is consistent with the family's prosecution history.

Independent claim 6 is the "means-plus-function" counterpart of claim 1. Same analysis applies; §112(f) construction would map the "biasing means" to the disclosed O-ring/elastomeric toroid and equivalents. None of the identified references, on the record I recovered, anticipates claim 6 as issued.

Independent claim 12 (method of assembling) tracks claim 1's structure plus the "fitting a biasing member ... non-metallic and non-conductive" step. Same analysis.

Independent claim 18 (improving grounding reliability) is the most structurally distinct: it requires an integral biasing structure extending from the body, with a connector body groove configured to allow the integral biasing structure to deflect axially (i.e., the FIG. 8A/9 biasing element 255 + notch 258 embodiment). The best-fit prior-art candidates for this are body-integral resilient shoulders:

• US 2010/0297871 A1 (Haube)
• US 2010/0233901 A1 (Wild et al.)
• US 2010/0233902 A1 (Youtsey)

Depending on whether those references disclose an integral, radially extending body shoulder with an axial-deflection groove, one of them could potentially anticipate claim 18 and its dependents (19–31) under §102. I could not verify their internal disclosures within my retrieval budget, so treat this as a lead, not a conclusion.

Dependent claims (2–5, 7–11, 13–17, and the 8,469,740 dependents such as the over-sized O-ring claim 5/11/17) are more exposed: an oversized elastomeric O-ring seated in a nut/body cavity is a well-known expedient (e.g., the Purdy and Malloy nut/body cavity art), so one of US 7,824,216, US 2010/0081321, or US 2010/0255721 could plausibly anticipate these narrower claims if it discloses an elastomeric (non-metallic) O-ring in that location.

7. Most relevant references, ranked (on available evidence)

1. US 7,824,216 B2 (Purdy), 2010-11-02 — "Coaxial cable continuity connector" — continuity member between coupling element and body; strongest structural analog to the cavity/biasing concept.
2. US 2010/0279548 A1 (Montena et al.), 2010-11-04 — nut/body continuity structure.
3. US 2010/0255721 A1 (Purdy et al.), 2010-10-07 — coaxial continuity connector.
4. US 2010/0081321 A1 and US 2010/0081322 A1 (Malloy et al.), 2010-04-01 — coupling-element/body engagement with continuity.
5. US 2010/0297871 A1 (Haube), 2010-11-25 — closest fit to claim 18's integral body biasing structure.
6. US 2011/0230089 A1 (Amidon et al.) / US 2011/0230091 A1 (Krenceski et al.) — PPC-family continuity/grounding art (post-priority; §102(e)/(a)(2) only).

8. Confidence and verification steps

• High confidence: the identity and bibliographic data of US 8,469,740 B2, its claims, and the list of forward citations.
• Moderate confidence: that the reference list in §3–5 matches 8,469,740's own front page (it is reproduced from sibling US 8,475,205 B2, same family/spec, filed Dec. 2012, and inter partes review papers in this family confirm Bence, Lionetto, Horak and Campbell as the art actually relied upon against the PPC family).
• Low confidence: any specific sentence-level §102 mapping, because I could not open the individual reference documents.

To finalize this for a real invalidity/validity opinion, verify the (56) block directly at:

• USPTO Patent Public Search / PatentCenter for 13/726,347 (front page "References Cited")
• Google Patents US8,469,740B2 → Citations tab (patent citations table)
• The family's EP counterpart EP 2 692 026 B1 and its search report (cited-by list retrieved above)

I want to be explicit: I have not verified the exact 8,469,740 citation list from the USPTO record itself, and you should not treat §3–5 as a substitute for that record.

I'll ground this in the actual prior-art record. Let me pull the references cited on the '740 and the art the Board/Fed. Cir. applied to its siblings.

Good — the sibling-patent record is rich. Now let me pull the references actually cited on the '740 itself and the key secondary references.

Obviousness Analysis — U.S. Patent No. 8,469,740 B2

"Continuity maintaining biasing member" (Ehret, Haube, Montena, Zraik; PPC Broadband, Inc.)

Scope note / identifier discipline. This is US 8,469,740 (app. 13/726,347, filed 2012‑12‑24, priority 2011‑03‑30 via continuation of Ser. No. 13/075,406). A different, unrelated patent is also colloquially called "'740" — the ITW push‑in fastener patent that issued from application Ser. No. 16/897,947 (surfaced in a PTAB petition in these searches). That document is not this patent; do not let the collision contaminate the art analysis. I have also kept all patent/publication numbers and dates exactly as retrieved and have not normalized any of them.

One correction to flag: the fetched Google Patents text does not include the machine‑readable "References Cited"/"Prior Art" table. The prior‑art keywords ("coupling element, biasing, post, connector, coupling") and the 2011‑03‑30 prior‑art date are present, but the face‑of‑patent citation list is not. I therefore reconstructed the operative art from (i) the '740's own Background (which is an admission of prior art), (ii) the adjudicated reference set from the sibling‑patent IPRs where the same family and same art were tested, and (iii) the citation lists indexed for the '740 and its siblings. The exact face list should be verified against the USPTO PatentCenter copy before filing.

1. Governing standard and level of ordinary skill

• Law: Pre‑AIA 35 U.S.C. § 103(a) applies (the application was filed 2012‑12‑24, before the 2013‑03‑16 AIA effective date, and claims 2011‑03‑30 priority). Graham v. John Deere, 383 U.S. 1; KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007); In re Cyclobenzaprine, 676 F.3d 1063 (Fed. Cir. 2012).
• POSITA: On the record developed in PPC Broadband, Inc. v. Corning Optical Communications RF, LLC, 815 F.3d 734 (Fed. Cir. 2016) ("PPC I") and the four Corning IPRs, a POSITA is a person with at least a bachelor's degree in engineering plus several years' experience in the design, manufacture, or use of coaxial cable connectors in communications systems. That definition was supplied by Corning's declarant Dr. Mroczkowski and adopted through the Board's decisions; PPC's declarant (Dr. Eldering) used a functionally equivalent definition. This is the de facto established POSITA for this exact family and is usable verbatim.

2. The claims to be analyzed (element decomposition)

Independent claim 1 (apparatus) requires:

1. post configured to engage an interface port;
2. body member with a body biasing portion;
3. coupling element engaging the post and movable between a first position (post not engaging port) and an axially spaced second position (post engaging port), the coupling element including (a) an inwardly extending lip with a rearwardly facing biasing portion and (b) an outer wall portion extending rearward;
4. the lip's rearward face + outer wall defining a cavity between coupling element and body;
5. a biasing member fitting in the cavity that cooperates with the lip's rearward face and the body biasing portion to exert a constant axial biasing force across the first↔second positions, sufficient to axially bias the coupling element toward the post;
6. the biasing member provides a physical seal between coupling element and body; facilitates an electrically conductive path through the coupling element and the post "even when the coupling element is in the first position"; and is made of a substantially non‑metallic and non‑conductive material.

Independent claim 6: same subject matter in means‑plus‑function form (§ 112(f)).
Independent claim 12: method of assembling — the claim‑1 structure plus "fitting" the biasing member.
Independent claim 18: method for improving grounding reliability — requires (i) an integral biasing structure extending from the body, its surface extending radially to engage the coupling element's biasing contact surface, and (ii) a connector body groove configured to allow the integral biasing structure to deflect along an axial direction.
Dependent claims 3, 14: post has an outwardly extending flange; bias the lip toward the flange. 5, 11, 17: the member is an over‑sized O‑ring whose axial dimension exceeds the cavity's axial depth. 19: the integral biasing structure extends an axial distance to engage the coupling element. 20–21: internal wall runs rearward; the biasing contact surface is substantially perpendicular to it and located axially rearward. 22–23: constant biasing force.

3. The prior-art record

4. Grounds of rejection

Ground 1 (primary) — Matthews in view of Tatsuzuki

Challenged claims: 1–5, 6–11, 12–17 (and 20–23).

The Board did find the Matthews + Tatsuzuki combination invalidating for the sibling claims (the '320, '353, and '060 patents), and the Federal Circuit affirmed those findings for every claim lacking the "maintain electrical continuity" limitation (PPC I, 815 F.3d at 747). For the '740, the combination supplies every structural element of claim 1 except the "non‑metallic and non‑conductive" material limitation.

Ground 2 — Matthews + Tatsuzuki + Montena (or the admitted art of the '740 Background)

Same claims; adds the sealing/non‑corrosion rationale.

Montena's O‑ring seal 170 between coupler and body supplies the express sealing member at the nut/body interface; the '740's own admitted Background supplies the express recognition that metallic O‑rings corrode and degrade. Together these supply the reason to select an elastomeric (non‑metallic, non‑conductive) resilient element for that location.

Ground 3 — Matthews + Tatsuzuki + connector‑body integral‑biasing art

Challenged claims: 18–23 (and dependent 19). Claim 18 needs an integrally‑formed resilient body shoulder with a relief groove (the '740's FIG. 8A/8B/9 "extended, resilient annular surface 256" + "notch 258"). Matthews' body 50 (with outer annular recess 56 and compliant outer surface 54/57) and Tatsuzuki's housing‑groove/spring arrangement provide the sub‑elements, but I could not verify — within this session's searches — a specific reference teaching the unitary resilient annular shoulder + deflection groove on a connector body. This ground must be built on additional art (e.g., living‑hinge/ resilient‑finger mechanical art as analogous art under KSR), and it is the weakest link in the challenge (see §6).

Ground 4 — Claims 6–11 and 12–17

Claim 6 is the § 112(f) recital of Grounds 1–2 (the corresponding structure is the biasing member 70 / O‑ring); claim 12 is the method of assembling the Grounds 1–2 structure. Neither adds patentable weight under In re Donaldson; both fall with Ground 1 or 2.

Ground 5 — Claims 5, 11, 17 ("over‑sized O‑ring … axial dimension larger than the axial depth of the cavity")

Sizing an elastomeric ring so that it is axially oversized and pre‑compressed within a fixed‑volume cavity to generate a seating/bias force is routine design optimization and an obvious design choice (In re Aller; KSR). Tatsuzuki expressly contemplates a pre‑loaded spring that is "not pressed to the point of becoming crushed flat," which frames oversize‑vs‑crush as a known, bounded design space.

5. Motivation to combine (articulated rationales)

1. Same field, same problem, same solution mechanism. Matthews and Tatsuzuki are both coaxial‑connector references addressing the identical problem the '740's own Background recites: loss of grounding continuity / RF leakage when the coupling nut is not fully tightened and when environmental exposure degrades metallic contact surfaces. Corning's petitions framed this as providing "an alternate ground path" and as "improv[ing] electrical continuity" — reasoning the Federal Circuit did not disturb as to motivation (PPC I; Corning's Response to Order on Remand, IPR2013‑00345).
2. Combining known elements, known method, predictable result (KSR prong (a)). Inserting a resilient member into the existing nut/body cavity is a geometric drop‑in; Matthews already puts an O‑ring in exactly that cavity (38), so the combination is a substitution within an existing seat.
3. Simple substitution of a known element for another to obtain a predictable result (KSR prong (b)) — the load‑bearing rationale for the non‑conductive limitation. Elastomeric O‑rings were the standard, well‑known sealing element in this exact location (Matthews' own O‑rings 70/80; Montena's O‑ring 170). Using a non‑metallic elastomer instead of a conductive/metallic ring to do the mechanical biasing job — while relying on metal‑to‑metal contact between the lip 36 and the post's tapered flange 47 for the conductive path (exactly what the '740 claim 1 requires: a path "through the coupling element and the post") — is a predictable substitution with a known benefit.
4. Known problem, known fix — express motivation from the art itself. Matthews [0005] and the '740's admitted Background both identify corrosion/galvanic incompatibility of metallic components as the cause of intermittent contact. Selecting a corrosion‑resistant non‑metallic elastomer is the recognized remedy, not an inventive insight. (This is the single strongest motivation hook; it comes from the references and the applicant's own admission, not from hindsight.)
5. Known technique to improve a similar device in the same way (KSR prong (c)). Tatsuzuki already teaches pre‑loading a resilient member to bias adjacent conductive parts so grounding survives loosening; applying that technique to Matthews' nut/body/post stack is the same technique applied to the same class of device with a predictable result.
6. Reasonable expectation of success. No new chemistry, no re‑design of the connector interface; the substitution retains every function Matthews and Montena already assign to the element (seal + continuous contact), and Tatsuzuki confirms the biasing member continues to function without being crushed.

6. Where a challenger must build the record (the honest weaknesses)

1. The "constant … biasing force … even when the coupling element is in the first position" limitation is the real battleground — not the structure. The '740's claim 1 deliberately imports a temporal/continuous requirement. This is the same type of limitation on which the Board and Corning repeatedly stumbled: in PPC I (815 F.3d at 743–47) the Federal Circuit vacated the obviousness findings as to every claim containing "maintain electrical continuity" because the Board made no findings that the combination maintained continuity over time; and on remand in PPC Broadband, Inc. v. Iancu (Fed. Cir., No. 2017‑1362) the court again rejected the Board's findings because they rested on an unsupported "press‑fit" theory, noting that Tatsuzuki expressly teaches its spring "is not pressed to the point of becoming crushed flat and does not lose its spring operation" and that PPC's expert opined Tatsuzuki "teaches away from such a press‑fitting modification." Any '740 petition that asserts Tatsuzuki supplies the "constant force/contact‑even‑in‑first‑position" element must pre‑empt the teaching‑away and press‑fit objections with record evidence, not attorney argument. Tatsuzuki's own disclosure (spring maintains connection even if the rotary element is loosened) is the best available counter, but it must be tied to contact with the post — the precise gap the Federal Circuit identified.
2. "Rearwardly facing biasing portion of the inwardly extending lip." Matthews' O‑ring 80 contacts outer internal wall 39 (and recess 56); the '740 claim 1 specifies the lip's rearward face. Map this expressly; it is a two‑ to three‑sentence gap, not a fatal one, but it must be charted.
3. Claims 18–23 (integral body biasing structure + deflection groove). No verified reference in this session teaches a unitary resilient connector‑body shoulder with a relief groove. This is the highest‑value search target. Note, however, that the parallel PerfectVision Mfg., Inc. v. PPC Broadband, Inc., No. 4:12‑cv‑00623 (E.D. Ark.) Markman order (Doc. 102, 2014‑08‑29) broadly construed the family's corresponding terms — "extends an axial distance" = "extends from the body in a direction parallel to the connector's axis," "deflect along the axial direction" = "deflect in a direction parallel to the connector's axis," and "notch/groove/void" = "a narrow ring‑shaped channel formed by the body that permits the biasing member or biasing element to deflect so that it can exert a biasing force." Those constructions widen the claim, which generally helps an obviousness challenge.
4. Claim‑text integrity. As flagged previously, the source text truncates claim 24. Verify the full claim set before charting any dependent claim.
5. "Non‑conductive material" vs. "facilitates an electrically conductive path" apparent tension. Resolve it on the claim's own terms: the recited path runs "through the coupling element and the post," so the non‑conductive member operates mechanically. Say so explicitly, or an opposing expert will read the limitation as self‑contradictory and argue indefiniteness/claim‑construction ambiguity.

7. Secondary considerations (objective indicia) — what the sibling record tells you

PPC actually litigated objective indicia on these very claims in the Corning IPRs: evidence of long‑felt but unresolved need, failure of others, copying (Corning copied PPC's "SignalTight" connectors), and commercial success. The Board found that long‑felt need, failure of others, and copying did not overcome the strong obviousness case; the Federal Circuit affirmed that treatment but remanded on commercial success, holding that where the product is the claimed invention, there is a presumption that commercial success is attributable to the invention and the petitioner bears the burden to rebut (PPC I, 815 F.3d at 746–47). Practical takeaways for a '740 challenge:

• A petitioner must affirmatively rebut any PPC showing that a SignalTight‑type product embodies the '740 claims — do not treat commercial success as PPC's burden alone.
• Copying is a double‑edged finding: it cut against PPC in the Corning IPRs even though it favored patentability in the abstract. Expect PPC to re‑offer the same evidence for the '740.

8. Bottom line

• Claims 1–5, 6–11, 12–17 are, on the face of the adjudicated record, obvious over Matthews in view of Tatsuzuki, and more strongly over that combination further in view of Montena and the '740's own admitted Background regarding metallic‑O‑ring corrosion. The only element the primary combination does not supply is the "substantially non‑metallic and non‑conductive" material limitation, which is a classic KSR simple substitution supported by express art‑based motivation (Matthews [0005]; '740 Background).
• Claims 5, 11, 17 are further obvious as routine design optimization of an over‑sized, pre‑compressed elastomeric ring.
• Claims 18–23 are conditionally obvious — the method steps and the axial‑deflection concept are supplied, but a verified reference for the unitary resilient body shoulder + deflection groove is missing from this session's record and must be located (or the argument re‑framed as analogous‑art/known‑technique under KSR).
• The decisive risk is not the structure; it is the temporal "constant biasing force, even in the first position" language — precisely the limitation type on which the Board's sibling‑patent findings were vacated twice. A challenger who charts Matthews + Tatsuzuki cleanly but ignores PPC I and the Iancu remand on the "press‑fit"/teaching‑away issue will likely lose institution or the FWD on that element.

Confidence and limits. High confidence in the claim 1/6/12 element breakdown, in Matthews' and Tatsuzuki's disclosures (both drawn from the adjudicated IPR record and the references' own text), and in the procedural history of PPC I and the Iancu remand. Medium confidence on Montena's precise patent number — I did not verify it this session and have therefore not asserted one. Low/unknown: the full face‑of‑patent reference list of the '740 (the fetched page omitted the citation table) and the content of the family's 2010/2011 PPC publications, which could supply § 102(e) art and, in particular, the missing integral‑biasing‑structure reference. Where the record was silent, I have said so rather than filling the gap.