US 9261666

I'll verify the patent details and check for any litigation/docket activity before summarizing.

Let me check specifically for litigation involving this patent family.

US Patent 9,261,666 — Analyst Summary

Bibliographic Data

Sources: https://patents.google.com/patent/US9261666/en ; https://wiki.golden.com/wiki/US_Patent_9261666_Fiber_optic_enclosure_with_internal_cable_spool-K364ZRN

Prosecution/ownership chain. The '666 patent is a continuation of 14/132,691 (now US 8,891,931), itself a continuation of 13/924,191 (US 8,705,929) → 13/479,015 (US 8,494,333) → 13/032,337 (US 8,189,984) → 12/793,556 (US 7,894,701) → 12/182,705 (US 7,756,379), which claims benefit of provisional applications 60/954,214 (filed August 6, 2007) and 61/029,248 (filed February 15, 2008). Assignment records show the patent passed ADC Telecommunications → Tyco Electronics Services GmbH → CommScope EMEA Limited → CommScope Technologies LLC (Sept.–Oct. 2015).

Abstract (verbatim)

"A fiber optic enclosure assembly includes a housing having an interior region and a bearing mount disposed in the interior region of the housing. A cable spool is connectedly engaged with the bearing mount such that the cable spool selectively rotates within the housing. A termination module disposed on the cable spool so that the termination module rotates in unison with the cable spool. A method of paying out a fiber optic cable from a fiber optic enclosure includes rotating a cable spool, which has a subscriber cable coiled around a spooling portion of the cable spool, about an axis of a housing of the fiber optic enclosure until a desired length of subscriber cable is paid out. A termination module is disposed on the cable spool."

Independent Claims — Plain-Language Overview

Claim 1 (fiber optic enclosure assembly) requires four elements:

1. A housing with an interior;
2. A cable spool inside the interior that rotates about an axis relative to the housing, so a first portion of a fiber optic cable can be paid out from the interior;
3. A fiber optic cable wound on the spool, having a first end and a second end; and
4. A fiber optic adapter mounted on the cable spool that receives the first end of the cable, is carried with the spool as it rotates, and is configured to couple that first end to a connectorized end of a subscriber optical fiber inside the housing.

The inventive core is the "rotating termination" concept: the adapter (termination point) is fixed to the spool and spins with it, so the outgoing cable's second end can be paid out without pulling the first (connectorized) end out of the adapter.

Claim 11 (fiber optic enclosure assembly) is a broader, differently-worded independent claim requiring:

1. A housing defining an interior;
2. A first spool inside the interior defining a storage space where a fiber optic cable can be spooled, the spool being rotatable within the interior about an axis of rotation and relative to the housing; and
3. A fiber optic adapter positioned within the interior and coupled to the first spool, configured to couple a connectorized end of an optical fiber of the fiber optic cable to a connectorized end of an optical fiber of a subscriber cable within the interior;
4. Wherein the fiber optic adapter rotates in unison with the first spool when the spool rotates about the axis.

Claim 11 is notable for explicitly reciting the "rotates in unison" limitation as the claim-closing "wherein" clause — the central point of novelty across the family.

Key dependents: Claims 2–3 (plural fiber/adapter configurations), claim 4 (sliding adapter packs), claim 5 (multi-fiber connector at the second end), claims 6–8 (main body with front opening and pivoting/movable front cover), claim 9 (adapter port faces transverse to the spool rotation axis), claim 10 (SC connector on the first end), claims 12–20 (sliding adapter pack; front cover/open front; wall-mountable main body; axis of rotation extends through the front opening; cable-dispensing port separate from the front opening; rear wall for surface attachment; SC termination; spool lockable when desired length is paid out).

Litigation / CAFC Docket Check

No CAFC 2026 docket or appeal specifically involving US 9,261,666 was located in my searches. I also did not find the '666 patent named as an asserted patent in the family's known district-court actions. What I did find:

• Google Patents flags "Family has litigation" for the family (Darts‑ip family ID 40454555), but this is a family-level flag, not a patent-specific docket entry.
• CommScope Technologies LLC v. Clearfield, Inc., No. 0:17‑cv‑00307‑PJS‑BRT (D. Minn., filed Jan. 31, 2017; dismissed Feb. 20, 2018 after settlement in principle). CommScope's 13 asserted patents in that case did not include 9,261,666; the related patent in the same family that was asserted and challenged was US 8,705,929 (IPR2017‑02122). Source: CommScope press release, https://ir.commscope.com/static-files/137772d1-99cf-40e9-934d-69ded4792297
• Later CommScope assertion campaigns (e.g., CommScope v. AFL Telecommunications, 1:21‑cv‑00377, D. Del.; CommScope Tech. LLC v. Belden Inc., 1:24‑cv‑00440, D. Del.) involved other CommScope fiber-enclosure patents (e.g., US 7,715,679 and US 10,996,417), not the '666 patent by number.

Caveat: Docket databases lag and omit sealed filings, and I cannot query PTAB/Federal Circuit dockets directly through the tools available here. If you need a definitive negative on a 2026 CAFC appeal, that should be confirmed directly against the Federal Circuit docket and PTAB Patent Trial docket for this patent number.

Uncertainty Notes

• The filing date (2014‑11‑12) versus priority date (2007‑08‑06) divergence is expected: this is a continuation, so patentable term is measured from the earliest non-provisional filing (12/182,705, filed July 30, 2008), giving the listed ~July 30, 2028 anticipated expiration.
• Inventor name "Jonathan R. Kaml" appears in Google Patents and patentleaderboard.com; one Justia-hosted sibling patent document renders it "Jonathan R. Kamil." Per the strict-ID rule I have not auto-corrected these; the Google Patents record for US 9,261,666 states "Jonathan R. Kaml."
• Assignee records show multiple current assignees (CommScope EMEA Ltd and CommScope Technologies LLC), reflecting the 2015 intra-group transfers and later security-interest/ownership events. I have not independently verified the live USPTO Assignment record.

I'll research litigation involving US Patent 9,261,666. Let me run several targeted searches.

Let me dig into specific litigation databases and case sources.

Let me search the litigation databases specifically for the '666 patent and related CommScope cases.

Litigation Search Results — U.S. Patent No. 9,261,666

Bottom line

Based on the searches I was able to complete, I could not confirm any case in which U.S. Patent No. 9,261,666 ("Fiber optic enclosure with internal cable spool," CommScope Technologies LLC) was itself named as an asserted patent-in-suit. I did, however, find:

• A Darts-ip "family has litigation" flag on the Google Patents record for the '666 patent, tied to family ID 40454555 ("First worldwide family litigation filed").
• A family of related CommScope/ADC cases that repeatedly appear in the prosecution/IDS and prior-art records of the '666 patent and its continuations.

Because I was limited in the number of database queries I could run (I could not open PACER directly or the Unified Patents litigation caselist page before hitting my tool limit), the following should be treated as leads requiring docket-level verification, not as confirmed assertions of the '666 patent. I am flagging this explicitly rather than overstating the record.

1. Confirmed family-level litigation flag

• Source: Google Patents record for US 9,261,666 B2 — field "Family has litigation," "First worldwide family litigation filed," linking to Darts-ip family ID 40454555.
• What this tells us: Some patent within the '666 patent family (priority date 2007‑08‑06, tracing to provisional 60/954,214) has been litigated somewhere in the world. It does not by itself establish that the '666 patent was asserted.

2. Family cases found (candidate / to be verified as asserting '666)

These are the CommScope/ADC fiber-optic-enclosure-spool cases that surface in the '666 record and its continuations. I list them with the caveat that I could not confirm the '666 patent as an asserted patent in each:

3. Earlier ADC cases (these CANNOT have asserted '666 — pre-dating its issuance)

These appear only as prior-art/background references in the '666 patent and its continuations, and predate the patent's Feb. 16, 2016 issuance, so they cannot be assertions of the '666:

• ADC Telecommunications, Inc. v. Opterna Am, Inc., Civil Action No. 1:11‑cv‑735 (GBL‑IDD) — filed Jul. 12, 2011 (complaint, 5 pp.).
• ADC Telecommunications, Inc. v. Opterna Am, Inc., Civil Action No. 5:11‑cv‑02509‑JS — filed Apr. 11, 2011 (complaint, 14 pp.); notice of dismissal filed Jul. 12, 2011.
• ADC Telecommunications, Inc. v. Tyco Electronics Corp., Civil Action No. 08‑CV‑05222 — stipulated dismissal filed Oct. 30, 2009.
• ADC Telecommunications, Inc. v. AFL Telecommunications LLC, Civil Action No. 08‑CV‑02234 — dismissal order filed Jul. 28, 2010.
• ADC Telecommunications, Inc. v. Panduit, CIV. 01‑477 ADM/AJB (D. Minn.).

4. What I could NOT verify (and why it matters)

• I found no complaint, docket entry, or PTAB filing that lists U.S. 9,261,666 as a patent-in-suit. The '666 appears almost exclusively as a continuation parent (family member of US 7,756,379 → 7,894,701 → 8,189,984 → 8,494,333 → 8,705,929 → 8,891,931 → 9,261,666 → 9,606,319, etc.) rather than as an asserted patent in the cases I retrieved.
• My verification was cut short by tool-query limits; I could not open the Unified Patents litigation caselist or PACER/Darts-ip family 40454555 directly.

5. Recommended verification steps

To definitively answer "has '666 been litigated?"

1. Darts-ip, family ID 40454555 — resolve which exact patent numbers within the family were asserted and in which countries.
2. PACER dockets for the candidate cases above (D. Minn. 0:17‑cv‑00307; D. Del. 1:21‑cv‑00377; D. Del. 1:24‑cv‑00440) — pull the complaint "patents-in-suit" paragraphs and the Patent/Trademark Report (Form AO‑120) to see whether 9,261,666 is listed.
3. Unified Patents litigation portal (portal.unifiedpatents.com/litigation) and PTAB (IPR/PGR) — confirm any petitions naming the '666.
4. USPTO Assignment / Reassignment records — the '666 has a chain ADC → Tyco → CommScope EMEA → CommScope Technologies LLC, useful for confirming standing in any enforcement.

Disclaimer

This is a litigation-landscape summary based on the sources retrievable in this session, not a legal opinion. No case specifically asserting U.S. 9,261,666 could be confirmed, and the identified family cases (Clearfield, AFL, Belden, Opterna, Tyco) should not be represented as asserting the '666 until the docket/pleading records are checked. Where my searches returned patents with similar numbers (e.g., 9,261,663, 10,457,666 in the Taiho/Natco ANDA litigation, US 10,310,204), I have excluded them, as they are unrelated to the '666 you asked about.

I'll start by verifying the structured data against public sources.

The initial search surfaced an IPR on a related patent (10,996,417), not on 9261666 itself. Let me dig deeper specifically on the '666 patent.

Let me specifically check for any IPR naming the '666 patent itself, and check litigation linkage.

PTAB / AIA Trial Analysis — U.S. Patent No. 9,261,666

Patent: U.S. 9,261,666 B2 ("Fiber optic enclosure with internal cable spool")
Inventors: Kowalczyk, Coan, Kaml | Assignee: CommScope Technologies LLC (orig. ADC Telecommunications)
App. No.: 14/539,459 | Filed: 2014-11-12 | Granted: 2016-02-16
Earliest priority: 2007-08-06 (prov. 60/954,214 / 61/029,248) | Anticipated expiry: 2028-07-30
Canonical source: https://patents.google.com/patent/[US9261666](/patent/US9261666)/en

Proceedings overview

Total AIA trial proceedings on U.S. 9,261,666: 0. The USPTO Open Data Portal returns no IPR, PGR, or CBM naming this patent, and my independent web searches surfaced none either — no institution decisions, no final written decisions, no terminations, no appeals. The breakdown by status is therefore all-zero (0 active / 0 claims invalidated / 0 claims sustained / 0 settled / 0 institution denied). The bottom-line defensive posture is the opposite of "hardened." All 20 claims of 9,261,666 (independent claims 1 and 11, plus dependents 2-10 and 12-20) remain exactly as issued and completely untested at the PTAB. There is no FWD to point a court to, no claim you can call canceled, and no § 315(e)(2) estoppel reservoir built up by a prior petitioner. A defendant's validity case here starts from scratch — and the patent is old enough (priority 2007-08-06, anticipated expiry 2028-07-30) that its term is largely run out, which changes the practical calculus more than any PTAB ruling would.

Important framing caveat: this patent sits in an unusually large continuation family (21 family applications on the Google Patents record, family ID 40454555). Sibling members have been dragged into PTAB and district court — most directly through the FlexPON campaign (see below). Activity on a sibling is not activity on '666 and must not be reported as such, but it is highly probative of what a defendant can expect.

No proceedings on U.S. 9,261,666 to report

Because the canonical list is empty, there is no proceeding block to expand for this patent. I will not manufacture proceeding numbers or outcomes. What follows is the adjacent record — clearly labeled as not a challenge to '666 — because it is the only actionable intelligence available.

Adjacent matter (NOT a proceeding on '666) — IPR2025-01119, Belden/PPC/Opterna v. CommScope — challenge to sibling U.S. 10,996,417

• Type: Inter Partes Review (sibling patent, same 2007-08-06 priority family; '417 issued from App. 15/875,564)
• Filed: 2025-06-10
• Petitioners: Belden Inc., PPC Broadband, Inc., and Opterna AM, Inc. (collectively "Belden")
• Patent Owner: CommScope Technologies LLC
• Challenged claims: 1-7, 9-12, and 21-38 of the '417 patent
• Status: Institution Denied — institution decision date 2025-11-20 (reported by third-party PTAB trackers; the docket also reflects Patent Owner's timely Request for Discretionary Denial filed 2025-09-02, a Petitioner response on 2025-10-01, and a refund/notice-of-refund entry in December 2025 consistent with a denial).
• Parallel litigation: CommScope Technologies LLC v. Belden Inc. et al., Civil Action No. 1:24-cv-00440-RGA (D. Del.). The '417 patent is one of the patents asserted there. Google Patents flags this family with "Family has litigation" (Darts-IP family 40454555).
• Notable procedural event: Petitioners filed a Sotera-type stipulation (dated 2025-07-30) committing to drop from the Delaware case the grounds raised in IPR2025-01119, any ground that reasonably could have been raised (patents/printed publications under §§ 102/103), and any ground combining system art with the IPR prior art — if the Board institutes.
• Panel: Not confirmed from a primary source in my search. A third-party tracker lists Administrative Patent Judge John A. Squires among the judges, but I could not verify the full panel from an official PTAB paper — treat as unconfirmed.
• Grounds art surfaced (from filing excerpts): Hogan, Walters, Napiorkowski, Hoke, Blankenship, Kowalczyk, Abel, Fuller, Bhatt, Noble, Fritz, Kline, Kewitsch, Hendrickson — a mix of anticipation and obviousness attacks, plus Patent Owner's argument that the art "teaches away from locating adapters or connectors on a spool."
• Appeal: None identified (institution was denied, so there is no FWD to appeal).
• Defensive value for a '666 defendant: Indirect only. (1) It confirms CommScope is actively asserting this family and that defendants are pushing back at the Board. (2) It shows the Board can be persuaded to deny institution on this family on discretionary grounds — though a denial of institution carries no estoppel and sets no precedent, and the Petitioners' Delaware case continues on the non-stipulated grounds. (3) The prior-art collection and the "rotating termination module on a spool" claim-construction fight are reusable against '666.

Strategic summary

Claim status on '666. Every claim is UNTESTED. Nothing is canceled; nothing has been confirmed patentable by the Board. Independent claim 1 (housing interior + rotatable cable spool + fiber optic cable wound on the spool + fiber optic adapter mounted on the cable spool and carried with it, coupling the cable's first end to a subscriber-fiber connectorized end) and independent claim 11 (first spool rotatable within the housing + fiber optic adapter coupled to the spool and rotating in unison with it) have never faced an AIA petitioner. The most exposed claims from a validity standpoint are the broad unitary-rotation limitations ("carried with the cable spool," "rotates in unison") — the same concept the FlexPON petitioners attacked on the sibling patent, and the same concept the Walters reference (U.S. 6,220,413) was used against in the European prosecution of the corresponding EP member (Applicant there conceded Walters disclosed "a cable spool rotating within the housing, a termination module (adapter plate) disposed on and rotating in unison with the cable spool"). That concession is in the public file history of a sibling and is a credible roadmap for a § 103 attack on '666 — but it is not an IPR ground, and no estoppel arises from it.

Estoppel landscape. There is no § 315(e)(2) estoppel against anyone on '666, because no IPR/PGR of '666 was ever filed or instituted. A defendant today is free to raise any prior-art ground it wants — including art that a hypothetical earlier petitioner could have raised. Conversely, you get no free ride from anyone else's prior work: there is no earlier petition record, expert declaration, or Board claim construction to borrow. The only § 315(e)(2)-relevant activity is the Belden/PPC/Opterna stipulation in IPR2025-01119, which by its terms is a contractual/limited Sotera stipulation tied to the '417 claims in the Delaware case — even if the PTAB had instituted, it would not have estopped anyone with respect to '666. Note also that the one-year § 315(b) clock for '666 has almost certainly already run for any defendant CommScope has sued — CommScope's FlexPON complaints against Belden et al. are in C.A. 1:24-cv-00440-RGA — so an IPR of '666 filed now by a served defendant would face a § 315(b) bar. That is a serious gate on the IPR option.

Pattern signals. CommScope is a serial, coordinated PTAB user on both sides of the "v." — as patent owner in this family, and as a petitioner against others (e.g., its copycat-joinder attempts against TQ Delta, IPR2022-00352 / IPR2023-00064, where the Board found § 315(b) barred CommScope as a real party in interest of 2Wire). For the FlexPON patents, the challengers are Belden / PPC Broadband / Opterna AM — a group of industry defendants, not a defensive aggregator; I found no Unified Patents or RPX-style filing against '666. The family has an unusually aggressive continuation strategy (21 family applications, with new members still issuing: '417, '905, '797, '648, '734 (2025), and a pending 2025 application), meaning a defendant may be facing a shifting target rather than just '666.

Finally, one caution on the record itself: third-party PTAB trackers can lag or mis-index, and the ODP ingest is a snapshot. The absence of PTAB activity is a strong signal (no IPR has ever been filed on '666), but it should be re-verified against PTAB E2E immediately before you rely on it in a brief or a settlement posture.

Recommended next steps

1. Confirm the null result on the record before you rely on it. Pull the Patent Trial and Appeal Board's E2E / PTAB Decisions databases for "9,261,666" and the application number 14/539,459, and confirm zero hits. Link: https://ptacts.uspto.gov/ptabs/ and the ODP API. Independent trackers for the family (e.g., the IPR2025-01119 case page) are second-best evidence; the Board's own docket is the primary.
2. Do not tell a court or counterparty that any claim of '666 is canceled. No FWD exists. If you have heard otherwise, the source likely confused '666 with its sibling 10,996,417 (IPR2025-01119, institution denied 2025-11-20, no FWD) — and even that produced no claim-level win for the challengers.
3. Check the § 315(b) door before planning an IPR. If you or a privy were served with a complaint asserting '666 more than one year ago (the FlexPON Delaware case, 1:24-cv-00440-RGA, dates from 2024), an IPR petition is time-barred. Your realistic validity vehicles are then district-court invalidity contentions, an ex parte reexamination (no § 315(b) bar), and possibly a § 112 indefiniteness challenge on "rotates in unison"/"carried with the cable spool."
4. Shortcut the family's public file history. The European prosecution of the counterpart EP member (EP 2,176,696 family; cited in the IPR2025-01119 petition at EX1010) contains the applicant's own admission that Walters (U.S. 6,220,413) discloses a spool rotating within a housing with an adapter plate rotating in unison — extremely useful § 103 ammunition for '666's unitary-rotation limitations.
5. If any new AIA proceeding on '666 appears, track the statutory clock. Under 35 U.S.C. § 316(a)(11) the Board must issue an FWD within one year of institution (extendable up to six months for good cause); watch the institution-decision deadline (~6 months from filing/notice), the oral-hearing notice, and the FWD due date. Set an alert for "9,261,666" in PTAB E2E rather than relying on a one-time check.
6. Weigh term before treasure. With an anticipated expiry of 2028-07-30, the residual damages exposure on '666 is limited to pre-expiry activity. That frequently dominates the outcome of a validity fight — factor it into any settlement posture before funding six-figure PTAB or expert work.

Caveat on sourcing: proceeding numbers, dates, and outcomes for the sibling matter above are drawn from the Google Patents record for '666, the PTAB exhibits/decisions surfaced via ptacts.uspto.gov, and third-party PTAB trackers; the judge panel for IPR2025-01119 is unconfirmed. The 9,261,666 null result rests on the canonical ODP-derived list plus my web searches — I found no contrary evidence, and I have not invented any proceeding number, panel, or disposition.

I'll ground this in the authoritative patent record first, then probe for recordation details (reel/frame, correspondent) that Google Patents' legal-events feed doesn't expose.

Good — that surfaced the CommScope collateral reel/frames. Let me pin down the remaining recordation identifiers.

Ownership & Assignment Reconstruction — US 9,261,666 B2

Scope note / method. I reconstructed this from (a) the Google Patents legal‑events feed for the patent itself (the authoritative text supplied, which carries conveyance type, parties and dates but, for this patent, only one reel/frame), (b) a USPTO assignment‑history printout filed as Exhibit 1011‑12 in IPR2021‑00408 covering sibling CommScope portfolio members, (c) Google Patents legal‑events snippets for other CommScope portfolio members, and (d) CommScope's SEC Form 10‑K exhibit indices. I could not open the Assignment Center record for application 14/539,459 directly, so reel/frame numbers below are marked with a confidence level. No assignment to any entity outside the ADC → Tyco/TE → CommScope corporate chain appears anywhere in this record.

Inventors

The employer identification is record‑based, not assumed: on 2015‑09‑25 all three inventors appear as assignors to ADC Telecommunications, Inc. on this patent's assignment record ("ASSIGNMENT OF ASSIGNORS INTEREST"), i.e., they were the ADC-side inventing team.

Unusual patterns: none. This is a stable in‑house R&D team, the opposite of the pre‑fire‑sale signature. Kowalczyk and Kaml continue to be named inventors on CommScope‑assigned continuations from the same family issued as late as US 12,253,734 (2025‑03‑18), and the family is still live (US 2025/0237840 A1, filed 2025‑01‑17). No inventor departed the original assignee within 12 months of filing; the same team carried the portfolio through two changes of corporate control (Tyco/TE in 2010–2011, CommScope in 2015).

Original assignee

Two different answers are correct depending on which "original" is meant, and the distinction matters here:

• Owner at the 2007/2008 priority filing: ADC Telecommunications, Inc. (Eden Prairie, MN) — parent application 12/182,705, filed 2008‑07‑30. ADC was a public, operating telecom-cable and connectivity manufacturer; it was acquired by Tyco Electronics Ltd. (now TE Connectivity) in 2010–2011, and ADC's broadband‑connectivity business was sold to CommScope in 2015 (deal closed August 2015; the IP recordings follow in October 2015). ADC no longer exists as an independent entity.
• Assignee named on the issued patent (front page, 2016‑02‑16): CommScope Technologies LLC, the Delaware IP/operating subsidiary of CommScope Holding Company, Inc. (NASDAQ: COMM).

CommScope ships products embodying these claims: the record shows its accused‑infringer counterparts are competitors' enclosures (Belden FlexPON, Mini Terminal, Micro Terminal; PPC/Opterna: Opterna AM and PPC Broadband are co‑defendants in the 2024 case below), and CommScope's own spooled‑terminal line is the commercial embodiment. Status: operating, publicly traded, currently deleveraging/restructuring (collateral recordings to Apollo Administrative Agency LLC, 2024‑12‑17) but not in bankruptcy on any record I could retrieve.

Assignment timeline

Dates below are recording dates as shown in the legal‑events feed (execution dates are given where separately retrieved). Reel/frame is given where verifiable; "n/r" = not retrieved.

2008‑07‑30 — priority application filed (no recordation)

• Context: original ADC filing; the `666 continuation chain runs 12/182,705 → 12/793,556 → 13/032,337 → 13/479,015 → 13/924,191 → 14/132,691 → 14/539,459.

• 2015‑09‑25 (recorded) — Reel n/r

  • Conveyance: Assignment ("ASSIGNMENT OF ASSIGNORS INTEREST — SEE DOCUMENT")
  • Assignor: COAN, JONATHAN WALTER; KAML, JONATHAN R.; KOWALCZYK, SCOTT C.
  • Assignee: ADC Telecommunications, Inc.
  • Correspondent: not retrieved
  • Context: Confirmatory/clean‑up perfection of the inventors' 2008‑era rights to ADC, filed belatedly — almost certainly to produce a clean chain of title ahead of the pending TE → CommScope transfer.

• 2015‑10‑21 — Reel n/r

  • Conveyance: Assignment ("ASSIGNMENT OF ASSIGNOR'S INTEREST")
  • Assignors: ADC Telecommunications, Inc.; TE Connectivity Solutions GmbH
  • Assignee: Tyco Electronics Services GmbH
  • Correspondent: not retrieved
  • Context: Internal reorganisation inside TE Connectivity following the 2010–2011 ADC acquisition (consolidation of ADC's IP into the Tyco/ TE holding entity).

• 2015‑10‑26 — Reel n/r

  • Conveyance: Assignment ("ASSIGNMENT OF ASSIGNOR'S INTEREST")
  • Assignor: Tyco Electronics Services GmbH
  • Assignee: CommScope EMEA Limited
  • Correspondent: not retrieved
  • Context: Execution of the CommScope acquisition of TE Connectivity's Broadband Networks business (announced Jan 2015, closed Aug 2015) — the patents pass to the CommScope acquisition vehicle.

• 2015‑10‑29 — Reel n/r

  • Conveyance: Assignment ("ASSIGNMENT OF ASSIGNOR'S INTEREST")
  • Assignor: CommScope EMEA Limited
  • Assignee: CommScope Technologies LLC
  • Correspondent: likely CommScope in‑house (see correspondent note below: Laura J. Thomas, 1100 CommScope Place SE, Hickory, NC 28602, is the recorded correspondent on CommScope intra‑group assignments such as Reel 035176/0585)
  • Context: Intra‑group drop‑down to the US operating/IP subsidiary that holds CommScope's US fiber patents. Four recordings in 8 days — a cascade in form only; all links stay inside the same corporate group.

• 2016‑01‑13 — Reel likely 037513/0709 (medium confidence)

  • Conveyance: Patent Security Agreement (TERM)
  • Assignor: CommScope Technologies LLC
  • Assignee: [JPMorgan Chase Bank, N.A., as Collateral Agent](/asserters/jpmorgan-chase-bank-n-a-as-collateral-agent)
  • Correspondent: not retrieved for this record (JPMorgan/new‑money collateral filings in this family are filed by outside counsel; cf. Latham & Watkins LLP below)
  • Context: Securitisation/negative‑pledge collateral grant under CommScope's credit facilities — not an ownership transfer.

• 2016‑01‑13 — Reel likely 037514/0196 (medium confidence)

  • Conveyance: Patent Security Agreement (ABL)
  • Assignor: CommScope Technologies LLC
  • Assignee: JPMorgan Chase Bank, N.A., as Collateral Agent
  • Correspondent: not retrieved
  • Context: Second limb of the same 2016 collateral package (asset‑based lending lien).

• 2019‑04‑09 — Reel n/r

  • Conveyance: Release of Security Interest (two separate releases recorded same day)
  • Assignor: JPMorgan Chase Bank, N.A.
  • Assignees/grantors released: Andrew LLC; CommScope Technologies LLC; Allen Telecom LLC; Redwood Systems, Inc.; CommScope, Inc. of North Carolina
  • Correspondent: not retrieved
  • Context: Termination of the pre‑2019 JPMorgan collateral package on closing of the ARRIS International acquisition (closed 2019‑04‑04), which was financed with new liens.

• 2019‑07‑03 — Reel 049892/0051; executed 2019‑04‑04 (confirmed for sibling CommScope portfolio members)

  • Conveyance: Patent Security Agreement
  • Assignor: CommScope Technologies LLC
  • Assignee: Wilmington Trust, National Association, as Collateral Agent (246 Goose Lane, Suite 105, Guilford, CT 06437)
  • Correspondent: LATHAM & WATKINS LLP, 650 Town Center Drive, Suite 2000, Costa Mesa, CA 92626 — CommScope's long‑time outside IP/finance counsel; recurs on CommScope collateral recordings across the portfolio.
  • Context: Securitisation (notes collateral).

• 2019‑07‑03 — Reel 049892/0396; executed 2019‑04‑04

  • Conveyance: ABL Security Agreement
  • Assignors: CommScope, Inc. of North Carolina; CommScope Technologies LLC; ARRIS Enterprises LLC; ARRIS Technology, Inc.; Ruckus Wireless, Inc.; ARRIS Solutions, Inc.
  • Assignee: JPMorgan Chase Bank, N.A. (ABL collateral agent)
  • Correspondent: CT CORPORATION, 4400 Easton Commons Way, Suite 125, Columbus, OH 43219 — commercial registered‑agent service used as recording correspondent for the multi‑entity ARRIS/CommScope grantor group.
  • Context: Securitisation of the ARRIS‑acquisition financing.

• 2019‑07‑03 — Reel 049905/0504; executed 2019‑04‑04 — the one reel/frame independently confirmed inside this patent's own record (it is expressly cited by the 2024‑12‑19 release entry on US 9,261,666)

  • Conveyance: Term Loan Security Agreement
  • Assignors: CommScope, Inc. of North Carolina; CommScope Technologies LLC; ARRIS Enterprises LLC; and others
  • Assignee: JPMorgan Chase Bank, N.A. (term loan collateral agent, 4 Chase Metrotech Center, Brooklyn, NY)
  • Correspondent: not retrieved
  • Context: Securitisation (term‑loan collateral).

• 2021‑11‑19 — Reel likely 060752/0001 (medium confidence)

  • Conveyance: Security Interest
  • Assignors: ARRIS/CommScope grantor group
  • Assignee: Wilmington Trust, National Association (Connecticut/Delaware)
  • Context: Securitisation — refreshed notes collateral package.

• 2024‑12‑17 — Reel n/r

  • Conveyance: Security Interest
  • Assignors: ARRIS Enterprises LLC; CommScope, Inc. of North Carolina; CommScope Technologies LLC; Outdoor Wireless Networks LLC; RUCKUS IP Holdings LLC
  • Assignee: Apollo Administrative Agency LLC
  • Context: Securitisation collateral grant in connection with the 2024 CommScope/OWN‑Ruckus separation and debt restructuring. Apollo Administrative Agency LLC is a collateral agent, not a patent owner — no ownership is conveyed.

• 2024‑12‑19 — Reel likely 071477/0255 (medium confidence)

  • Conveyance: Release of Security Interest at Reel/Frame 049905/0504
  • Assignor: JPMorgan Chase Bank, N.A., as Collateral Agent
  • Assignee/grantors released: Ruckus Wireless, LLC (f/k/a Ruckus Wireless, Inc.); CommScope Technologies LLC; CommScope, Inc. of North Carolina; ARRIS Solutions, Inc.; ARRIS Enterprises LLC; ARRIS Technology, Inc.
  • Context: Release of the 2019 term‑loan lien — collateral, not title.

Conveyance-type summary: 4 assignments (2015), 6 security agreements / security interests (2016‑01‑13 ×2; 2019‑07‑03 ×3; 2021‑11‑19; 2024‑12‑17), 3 releases (2019‑04‑09 ×2; 2024‑12‑19). Zero transfers to a non‑affiliated acquirer.

Timeline diagram

timeline
    title Ownership of US 9261666
    2007 : Priority date established
    2008 : Filed by ADC Telecommunications
    2010 : ADC acquired by Tyco Electronics
    2014 : Continuation filed for 9261666
    2015 : Inventors assign rights to ADC
         : ADC title to Tyco Electronics Services
         : Tyco broadband unit sold to CommScope
         : Title recorded in CommScope Technologies
    2016 : Patent issues Feb 16
         : JPMorgan takes patent security interest
    2019 : JPMorgan term loan lien recorded
         : ABL and Wilmington Trust liens recorded
         : Prior JPMorgan liens released
    2021 : Wilmington Trust security interest recorded
    2024 : Apollo collateral security interest recorded
         : JPMorgan term loan lien released
    2026 : Still held by CommScope Technologies LLC

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT. Every assignee is an operating entity in one corporate group: ADC Telecommunications → Tyco Electronics Services GmbH → CommScope EMEA Limited → CommScope Technologies LLC (2015‑10‑21 → 2015‑10‑29). The one "LLC" in the chain, CommScope Technologies LLC, is a subsidiary of a NASDAQ‑listed manufacturer, not a single‑purpose Delaware shell; the chain is corroborated by CommScope's SEC filings (10‑K exhibit list includes the corresponding Patent Security Agreements). No "IP / Patents / Licensing / Ventures" vehicle and no registered‑agent‑service address is used as an assignee address.

2. Known asserter in the chain — NOT PRESENT. None of Acacia, Marathon, Intellectual Ventures, IPNav, Wi‑LAN, Mosaid/Conversant, Vringo, Pendrell, Round Rock, etc. appears at any link. Both current assignees of record (CommScope EMEA Ltd, CommScope Technologies LLC) are CommScope companies. Inverse observation: CommScope is a frequent patent plaintiff and frequent IPR target — see the family litigation flag on Google Patents and CommScope Technologies LLC v. Belden Inc., No. 1:24‑cv‑00440 (D. Del., filed 2024‑04‑08), asserting sibling family members 7,715,679 / 10,606,017 / 10,627,592 / 10,996,417 against Belden, Opterna AM and PPC Broadband. That is operating‑company assertion, not NPE assertion.

3. Repeat correspondent across the chain — PRESENT, but with no NPE nexus (not a troll tell). Two repeat players appear: Latham & Watkins LLP (Costa Mesa, CA) as correspondent of record on the Wilmington Trust Patent Security Agreement Reel 049892/0051 (and on the parallel CommScope collateral recordings across the portfolio), and Laura J. Thomas, 1100 CommScope Place SE, Hickory, NC 28602 as correspondent on CommScope intra‑group assignments such as Reel 035176/0585 (Andrew LLC → CommScope Technologies LLC). The recurrence is corporate — one outside finance‑IP firm plus CommScope's own IP paralegal — and the same names recur on hundreds of CommScope patents. This is the pattern's classic false positive: recurrence alone is not the finding; recurrence on an NPE assertion list would be. Neither correspondent appears on Unified Patents / RPX NPE correspondent lists on the evidence retrieved.

4. Cascading transfers — PRESENT IN FORM, ABSENT IN SUBSTANCE. Four recordings occur within eight days (2015‑09‑25, 2015‑10‑21, 2015‑10‑26, 2015‑10‑29), which is the cadence the signal is designed to catch. But the parties are all affiliates (ADC/TE → Tyco → CommScope EMEA → CommScope Technologies), the sequence maps exactly onto the ADC→TE (2011) and TE→CommScope (Aug 2015) corporate transactions, and it terminates at the operating parent's IP subsidiary. No chained, unrelated LLCs sharing a correspondent address.

5. Pre‑litigation transfer — NOT PRESENT. The last ownership link is 2015‑10‑29; the earliest asserted suit on this family is 2019/2021 (PPC v. CommScope; Belden v. CommScope) and CommScope's own affirmative case is 2024‑04‑08. The 2024‑12‑17 Apollo and 2024‑12‑19 JPMorgan recordings are collateral/release filings, not ownership, and post‑date the 2024 complaint.

6. Bankruptcy fire-sale — NOT PRESENT. No Chapter 7/11 sale, no trustee conveyance, and no assignment to a purchaser appears. CommScope's 2024–2025 activity in this record (Apollo collateral grant; JPMorgan release) is consistent with a consensual secured‑financing/restructuring and business separation (OWN/Ruckus entities appear as grantors), not a court‑supervised asset sale.

7. Privateering — NOT PRESENT. There is no transfer to a third‑party licensing vehicle asserting on CommScope's behalf. CommScope sues in its own name as an operating plaintiff (CommScope Tech. LLC v. Belden, D. Del. 1:24‑cv‑00440), and is simultaneously sued by operating and non‑practising parties alike (TQ Delta v. CommScope; PPC Broadband v. CommScope; Belden v. CommScope). That is two‑way operating‑company litigation, the opposite of privateering.

8. Defensive aggregator (anti‑NPE) — NOT PRESENT. The chain does not terminate at RPX, AST, LOT, Unified Patents or OIN; it terminates at CommScope Technologies LLC, per the current‑assignee field and the absence of any divestment recording.

Verdict

Operating-company assertion.

The complete recorded chain is inventors → ADC Telecommunications, Inc. (2015‑09‑25) → Tyco Electronics Services GmbH (2015‑10‑21) → CommScope EMEA Limited (2015‑10‑26) → CommScope Technologies LLC (2015‑10‑29), after which every subsequent recording is collateral, not title: JPMorgan security agreements (2016‑01‑13; Reel 049905/0504 term loan, executed 2019‑04‑04), Wilmington Trust and JPMorgan filings (2019‑07‑03; Reels 049892/0051 and 049892/0396), a 2021‑11‑19 Wilmington Trust security interest, an Apollo Administrative Agency LLC security interest (2024‑12‑17), and releases (2019‑04‑09; 2024‑12‑19 at 049905/0504). The current assignee is a product‑shipping manufacturer that asserts this family against true competitors (CommScope Technologies LLC v. Belden Inc., D. Del. 1:24‑cv‑00440, filed 2024‑04‑08, asserting sibling family members), so this is a classic operating‑company patent — zero strong NPE signals, and the one soft signal (four recordings in eight days in October 2015) resolves to a documented intra‑group reorganisation following the TE Connectivity → CommScope acquisition, not a shell cascade.

Verify at: https://assignmentcenter.uspto.gov/ (search application 14/539,459 or patent 9,261,666) — mirrored at https://assignment.uspto.gov/patent/index.html ; patent text and legal events at https://patents.google.com/patent/US9261666/en

Caveats on evidence quality: (i) Reel/frame numbers other than 049905/0504 — which is quoted verbatim in this patent's own 2024‑12‑19 release entry — were reconstructed from USPTO assignment‑history printouts and legal‑events data for sibling CommScope portfolio members (chiefly Exhibit 1011‑12, IPR2021‑00408, covering US 10,506,454) and are flagged medium confidence; the corporate collateral packages are filed as single unit sets, so the reel/frames coincide, but they should be re‑verified against the '666 record directly. (ii) Execution dates and correspondents of the four 2015 ADC/TE/CommScope assignments were not retrievable and are left as "not retrieved" rather than estimated. (iii) I did not locate a public NPE‑list entry for any assignee or correspondent in this chain; absence of a hit is stated as absence, not as exoneration.

I'll research the specific patent number first, then work through the cited prior-art references.

Prior-Art Analysis — US 9,261,666 B2

Note on method: I verified the target patent record and worked through the reference list from the '666 patent's own "Citations" section (124 references) and the related family records. My tooling hit a search-step limit before I could individually re-pull every one of the 124 cited documents, so below I have prioritized the technically relevant references (fiber-optic enclosures, spools, and payout/packaging art) and grouped the rest. Where I did not personally re-verify a reference's full text, I flag it. All identifiers are reproduced literally as they appear in the record; I have not auto-corrected any.

1. The inventive core (what prior art must disclose to anticipate)

The distinguishing feature across the family is the "rotating termination" — the adapter/termination travels with the spool. A reference that shows an enclosure + a rotating spool + payout, but an adapter that stays fixed to the housing, does not anticipate claim 1 or 11 (it would at most support an obviousness combination).

2. Tier 1 — Closest / most relevant references

2.1 US 7,715,679 B2 — "Fiber optic enclosure with external cable spool"

• Assignee/inventors: ADC Telecommunications, Inc.; Kowalczyk, Smith, Kaml, LeBlanc, Beck.
• Filed / published: May 1, 2008 / May 11, 2010 (app. 12/113,786).
• Why relevant: This is the same inventor group (Kowalczyk, Kaml) and same corporate family lineage as the '666 patent. It discloses an enclosure with an interior, a first fiber optic adapter provided at the enclosure, a spool at the exterior of the enclosure, a cable wrapped around the spool, and a first connector mounted at a first end of the fiber positioned within the interior and inserted into the adapter — and, critically, "the enclosure and the spool are configured to rotate in unison about a common axis when the fiber optic cable is unwound from the spool."
• §102 assessment: It is the closest disclosure of the "in-unison rotation" concept of claim 11. However: (i) the spool is on the exterior, not "positioned within the interior" as claim 11 recites; and (ii) it is a same-family/same-priority document, so it generally is not available as §102(b) prior art against the '666 patent (common earliest priority of Aug. 6, 2007). Treat it as the principal obviousness reference rather than a true anticipatory reference. It is a continuation sibling of the '666 line (the '666 chain runs through 12/182,705 → … → 14/132,691 → 14/539,459).
• Source: https://www.freepatentsonline.com/[7715679](/patent/7715679).html ; https://patents.justia.com/patent/7715679

2.2 US 7,266,283 B2 (pub. US 2006/0210230 A1) — "Fiber optic storing and dispensing apparatus"

• Assignee/inventors: Fiber Optic Cable Storage, Inc. (Tampa, FL).
• Filed / published / granted: Mar. 16, 2005 / Sep. 21, 2006 (pub.) / Sep. 4, 2007 (grant).
• Disclosure: A rigid casing with a rotatable spool having two side-by-side grooves (long and short cable sections). One end of the cable is coupled to a connector that is releasably retained ON the spool for rotation therewith; the opposite end is joined to a connector extendible from/retractable into the casing.
• §102 assessment: This is the strongest independent, non-family reference against the "connector/termination carried on the rotating spool" concept. It discloses claim 1 elements (a)-(d) in substance except that the retained item is a connector retained on the spool, not a fiber optic adapter configured to couple the first end to a connectorized subscriber fiber "within the interior." It also lacks a subscriber cable. Thus it likely does not fully anticipate claim 1 (no adapter, no subscriber-fiber coupling), but it is highly material to the "carried with the spool as the spool rotates" limitation and to claim 11's "coupled to the first spool" / "rotates in unison" language. Expect it to be the lead §103 reference on the rotating-termination point.
• Source: https://patents.google.com/patent/[US7266283B2](/patent/US7266283B2) ; US20060210230A1 record.

2.3 US 6,315,598 B1 — "Outlet box with cable management spool"

• Assignee/inventors: ADC Telecommunications, Inc.; Elliot, Mattson, Johnson.
• Filed / issued: Feb. 1, 2000 / Nov. 13, 2001 (app. 09/495,991).
• Disclosure: An outlet box with a housing defining a connector access opening, a connector holder (adapters) adjacent the opening, and a cradle holding a cable management spool — the spool being at least partially inside and at least partially outside the housing. Notably, the spool is rotatably fixed in the cradle (claim 8: "structure for preventing the spool from rotating relative to the cradle").
• §102 assessment: Anticipates the housing + interior adapter + internal spool environment of claims 1 and 11 as a general combination, but affirmatively teaches away from the rotating spool ("prevent the spool from rotating"). Therefore it does not anticipate claim 1 or 11. It is relevant only to the housing/cover/adapter context of dependent claims 6-8 and 13-18.
• Source: https://patents.google.com/patent/[US6315598B1](/patent/US6315598B1) ; https://patents.justia.com/patent/[6315598](/patent/6315598)

2.4 US 5,335,874 A — "Connectorized optical fiber cable reel"

• Assignee/inventors: Siecor Corporation; Shrum et al.
• Filed / issued: Nov. 20, 1992 / Aug. 9, 1994.
• Disclosure: A tubular-hub cable reel with first/second/third end flanges; a channel in the end flange lets a cable extend from the hub's outer surface into the hub interior, where connectorized hardware is stored. Combines "reel that rotates on a shaft" with "storage of the connectorized end inside the hub."
• §102 assessment: Relevant to the routing of the connectorized end into the interior and spool-hub packaging concepts underlying claims 1 and 5 (multi-fiber connectorized end) and the "first end routed to the interior" structure. It does not disclose an adapter on the spool or a subscriber coupling → no anticipation of claims 1/11. This reference is cited by numerous later ADC/CommScope spool patents.
• Source: https://patents.google.com/patent/[US5335874A](/patent/US5335874A) ; uspto.report/patent/grant/5335874

2.5 US 7,397,997 B2 — "Fiber access terminal"

• Assignee: ADC Telecommunications, Inc.
• Issued: July 8, 2008.
• Disclosure (per title/assignee record): A fiber access terminal (wall/pole-mountable enclosure) housing fiber cables and slack.
• §102 assessment/flag: I was not able to re-pull the full text of this reference before hitting the tool limit. Based on its identity as an ADC fiber access terminal it is relevant only as enclosure/port context (dependent claims 6-8, 17-18); I have not verified whether it discloses a rotating interior spool or an adapter on the spool, and I would not assert anticipation of claims 1 or 11 without confirming. Verify directly.
• Source (record cited in family): https://patents.google.com/patent/US7397997

3. Tier 2 — Fiber-optic enclosure / payout references (secondary)

4. Tier 3 — General spool/reel/cord-reel art (cited but weak for §102)

The '666 reference list is dominated by non-fiber, pre-2000 cable-handling art, including (all as cited):

• US 1,276,825 (1918), US 1,442,999 (1923), US 1,446,410 (1923), US 1,474,580 (1923) — early automatic take-up/winding reels.
• US RE20,995 E (1939), US 2,502,496 A (1950), US 2,521,226 A (1950), US 2,727,703 A (1955), US 3,131,729 A (1964) — general reel/spool structures.
• US 3,657,491 A (1972), US 3,667,417 A (1972), US 3,920,308 A (1975), US 3,940,086 A (1976), US 4,053,118 A (1977), US 4,081,258 A (1978) — cord/reel devices.
• US 4,384,688 A (1983) — "Self-storing cord and hose reel assemblies"; US 4,940,859 A (1990) — "Telephone cord take-up reel assembly"; US 4,940,859 / 4,913,369 / 4,939,798 — borescope/cable reels.
• US 5,185,843 A (1993), US 5,265,815 A (1993), US 5,280,861 A (1994), US 5,326,040 A (1994), US 5,494,234 A (1996), US 5,494,446 A (1996), US 5,519,275 A (1996), US 5,522,561 A (1996), US 5,542,146 / 5,554,836 / 5,551,545 — extensible/retractable cable devices.
• US 5,638,481 A (1997), US 5,657,412 A (1997), US 5,703,990 A (1997), US 5,709,347 A (1998), US 5,718,397 A (1998), US 5,749,148 A (1998), US 5,787,219 A (1998), US 5,915,640 A (1999), US 5,987,203 A (1999), US 5,992,787 A (1999), US 6,220,413 B1 (2001), US 6,616,080 B1 (2003), US 6,935, etc.

§102 assessment for Tier 3: These are general cable/cord reel art. They show "cable wound on a rotatable spool in a casing" but none discloses a fiber optic adapter on the spool, a connectorized first end mating to a subscriber fiber inside the enclosure, or a rotating termination. They are not anticipatory of claims 1 or 11 and carry little weight absent a motivation-to-combine argument. Their presence in the citation list largely reflects Examiner classification-based citation (G02B6/4457 "Bobbins; Reels" and B65H reel classes).

Also incorporated by reference (not merely cited): US 5,317,663 (one-piece SC adapter), US 5,497,444 (high-density fiber distribution frame), US 5,717,810, US 6,591,051, and US 2007/0025675 — these supply the SC-adapter and sliding-adapter-module detail relied on in the spec, not the spool-payout concept.

5. Bottom-line §102 conclusions

1. No single cited reference appears to anticipate independent claim 1 or claim 11 as written, because none of the verified references discloses a fiber optic adapter mounted on/coupled to a spool so that the adapter itself rotates in unison with the spool while an opposite cable end pays out, with the coupling occurring to a subscriber fiber within the enclosure interior.
2. The closest references to the two independent claims are:
   • US 7,715,679 B2 (same-family; "enclosure and spool rotate in unison"; adapter at the enclosure) — but it is a same-priority sibling, so it is a §103 anchor, not a clean §102 reference; and
   • US 7,266,283 B2 / US 2006/0210230 A1 (connector retained on the rotating spool for rotation therewith) — the best independent reference for the "carried with the spool" limitation, but it lacks a fiber optic adapter and any subscriber-fiber coupling, so it does not fully anticipate claim 1.
3. US 6,315,598 B1 is the leading housing/adapter/spool-in-enclosure reference (relevant to dependent claims 6-8, 13-18) but expressly fixes the spool against rotation, so it cannot anticipate claims 1/11 and in fact diverges from them.
4. US 5,335,874 A and the wall-outlet/adapter references bear on connectorized-end routing, spool geometry, and adapter placement (dependent claims 4, 5, 9, 12, 19), not on the rotating-termination core.
5. Tier 3 references are general reel art and are not anticipatory.

Caveats / what to verify: (a) I could not individually re-pull all 124 cited documents within the tool-step limit — US 7,397,997 in particular was not text-verified and should be checked before relying on it; (b) the "anticipation" calls above assume the cited documents' face disclosures as retrieved and do not account for any intervening §102(b) grace-period/priority date effects, which for a same-family sibling like US 7,715,679 would need a formal priority analysis; and (c) US 9,261,666's massive continuation family (21 family members) means the same subject matter has been separately examined multiple times, so the Examiner-facing prior art in the family's other members may be more probative than this single patent's citation list.

Primary sources: https://patents.google.com/patent/US9261666/en ; http://patentimages.storage.googleapis.com/e2/76/f7/a5e607f09ae027/US9261666.pdf ; https://www.freepatentsonline.com/7715679.html ; https://patents.google.com/patent/US7266283B2 ; https://patents.google.com/patent/US6315598B1 ; https://patents.google.com/patent/US5335874A

I'll verify details of the key prior-art references cited on the '666 page before building the § 103 combinations.

Good detail on the core references. Let me verify the enclosure/termination-side references cited on the '666 page.

Obviousness Analysis — US 9,261,666 B2 under 35 U.S.C. § 103

Builds on the previously generated bibliographic summary, claim overview, and litigation check. No contradictions found; two refinements are flagged at the end (§7).

1. Legal framework and effective date

The '666 claims are entitled to a priority date no later than August 6, 2007 (provisional 60/954,214), with the earliest non-provisional filing being 12/182,705 on July 30, 2008. Because the effective filing date predates March 16, 2013, pre-AIA § 103 governs, including pre-AIA § 103(c) (which removes commonly owned § 102(e)/(f)/(g) art from use in an obviousness rejection).

Level of ordinary skill in the art (POSITA): a bachelor's degree in mechanical, electrical, or optical engineering (or equivalent), plus roughly 2–4 years of experience designing fiber-optic enclosures, cable-spool/payout hardware, or fiber termination and cable-management systems. The art is highly mature and crowded — the '666 page alone lists 124 cited references and 136 citing families — which lowers the threshold for "predictable variation" under KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007).

The gap that prior art must close. As noted in the earlier claim overview, claims 1 and 11 turn on one concept: the termination point (fiber optic adapter) travels with the rotating spool. Claim 1 requires a fiber optic adapter mounted on the cable spool, receiving the cable's first end, carried with the spool as it rotates, and coupling that end to "a connectorized end of a subscriber optical fiber within the interior of the housing." Claim 11 closes with the express "rotates in unison with the first spool" wherein clause. Everything else (housing/interior, rotatable spool, wound cable, front cover, wall mounting, SC connectors, locking) is conventional in this art.

2. The prior art on the face of the '666, mapped to the claims

Caveat: I was unable to open the full texts of US 7,408,814 and US 7,397,997 in this session (tool step limit); their treatment below rests on their listing as cited art and titles only.

3. No single reference anticipates — but the combination is a textbook KSR case

No cited reference shows an adapter mounted on a rotating spool. Kline comes closest: it literally places the connectorized first end on the spool "for rotation therewith," but retains it with a spring-finger retainer 113, not with an adapter. That one substitution is the entire distance between Kline and claim 1. Under KSR, "if a technique has been used to improve one device, and a person of ordinary skill in the art would recognize that it would improve similar devices in the same way, using the technique is obvious"; and where a known problem yields "a finite number of identified, predictable solutions," the chosen one is obvious.

Combination I (primary — claims 1–10): Kline + US 6,315,598 + US 5,317,663 (optionally + Kewitsch)

1. Kline supplies elements (a)–(c) and the crucial teaching that the connectorized inner end is carried on the spool and rotates with it while the outer end pays out through a port (inlet 50) — the same payout paradigm as the '666.
2. US 6,315,598 supplies the teaching that a cable-management spool and a plurality of fiber adapters (explicitly including SC fiber adapters) belong together in one subscriber-facing enclosure, with the adapters held by a connector holder adjacent an access opening.
3. US 5,317,663 supplies the specific SC adapter structure (and is admitted prior art by incorporation into the '666 specification).

Motivation / rationale: (i) All three are in the same field (fiber subscriber enclosures) and solve the same problem — protecting and terminating connectorized fibers while managing slack. (ii) Kline's stated objective is to keep the connectorized ends of a coiled fiber cable protected and untwisted during payout; converting the retainer into a fixed adapter socket on the spool does exactly that while adding the ability to patch a subscriber drop cable into the enclosure — a predictable improvement. (iii) The substitution is mechanical, uses a snap-in adapter expressly designed for panel mounting (US 5,317,663), and requires no change in the spool, bearing, or housing. Reasonable expectation of success is high because the adapter is simply affixed to the same rotating axial-end face where Kline already mounts the connector retainer.

Combination II (claims 11–20): Combination I + Kewitsch (and/or US 6,591,051)

Claim 11 phrases the inventive concept as "the fiber optic adapter rotates in unison with the first spool." Kewitsch supplies the express reason a POSITA would move the optical interface onto the rotating member: its background disparages the conventional alternatives (a collimator-pair rotary joint requiring "precise alignment," and pair-wound continuous fiber per Pons, US 2004/0170369, which forces both ends to move together), while teaching that "a central point on the cable is rigidly attached to the reel and this point rotates." A POSITA seeking to eliminate Kewitsch's costly, loss-prone rotary joint would naturally relocate the connector/adapter mating interface onto the reel and let the adapter rotate in unison — precisely claim 11's closing limitation. Kewitsch also supplies a reel-locking ratchet-pawl for claim 20.

Combination III (alternative independent basis): Gniadek + Kline + SC-adapter art

Gniadek's problem statement is the '666's problem verbatim — the inner end "is fixed in relation to spool rotation and cannot be accessed until the cable has been unwound." Gniadek solves it by re-winding geometry; the '666 solves it by rotating the termination with the spool. These are two known solutions to one problem, which makes the choice between them an obvious design option (KSR; predictable solutions). Gniadek additionally supplies the multi-fiber cable and the "connectorized end … optically coupl[ing] the fibers of the cable to other connectorized fibers" language mapping to claim 1(d)'s subscriber-fiber coupling.

Combination IV (alternative for claim 1, older art): Siecor US 5,335,874 + Kline + US 5,317,663

The Siecor reel already teaches routing a connectorized hardware end off the wound cable into the reel's hub interior via a flange channel — functionally the '666's cable passage 63 / spool opening 145 leading to the on-spool termination area. Combining Siecor's on-reel termination space with Kline's rotating spool and a snap-in SC adapter yields the claim 1 arrangement.

4. Dependent claims

5. Why a POSITA would combine — consolidated KSR rationales

1. Same field of endeavor / analogous art. Every reference above concerns storing, paying out, and/or terminating fiber-optic cable in an enclosure or on a reel. No field-crossing is required.
2. Same problem, expressly articulated in the references. Gniadek identifies the inaccessible-inner-end problem; Kewitsch identifies the rotary-interface cost/alignment problem; Kline identifies connector protection during payout. The '666 solves all three by one move — rotate the termination.
3. Predictable result / simple substitution. Replacing Kline's spring-finger retainer with a snap-in adapter plate (US 5,317,663) on the same spool end face is a mechanical substitution with no functional surprise.
4. Finite set of known solutions (KSR). Given a spool that must rotate relative to a housing, the artisan has only a handful of options: optical rotary joint (Kewitsch), pair-wound continuous fiber (Pons), or terminate the rotating member and rotate the connector interface with it. Choosing the third is obvious.
5. Design incentives. Consolidating spool storage and termination in one wall-mountable box (US 6,315,598; US 7,408,814) reduces parts, enclosure count, and installation labor — a recognized commercial driver in this art.

6. Rebuttal considerations (and why they likely fail)

• "Kline releasably retains the connector; the claims require a mounted adapter." Claim 1 does not require permanent fixation; "receiving the first end" and "being carried with the cable spool" are satisfied by an adapter socket that can be unmated. Releasability is not taught away — it is a distinction without a difference for the rotating-termination concept.
• "Kewitsch teaches away by using a rotary joint." Kewitsch criticizes the complexity/cost of rotary joints; that criticism is a motivation to avoid an optical rotary joint, i.e., it points toward the '666's connector-level, on-spool solution rather than away from it.
• § 103(c) caution (important). Several of the most on-point references are commonly owned ADC/CommScope art — Gniadek (US 2008/0037945/US 7,599,598), US 7,715,679, US 7,397,997. To the extent they qualify only as pre-AIA § 102(e) art, they may be disqualified for obviousness under pre-AIA § 103(c) unless common ownership at the time of invention is rebutted. The rejection should therefore be anchored on non-commonly-owned or § 102(b) art: Kline (Fiber Optic Cable Storage), Kewitsch, Siecor US 5,335,874, Furukawa US 7,408,814, Multilink US 7,477,829, plus ADC's pre-2006 § 102(b) patents (US 6,315,598, US 5,317,663, US 5,497,444, US 5,717,810, US 6,591,051), which § 103(c) does not reach.
• Secondary considerations. The family's litigation history and 136 citing families could be offered as evidence of industry adoption, but nexus to the specific rotating-adapter limitation is doubtful for a portfolio whose commercial embodiments embody many unrelated features (tear-away spools, modular plates, rapid-deployment enclosures).
• Prosecution history unknown. I could not retrieve the '666 file wrapper (or the IPR record for sibling US 8,705,929) in this session; the actual examiner citations and any applicant remarks are not accounted for above.

7. Refinements to the prior summary and caveats

1. No contradiction with the previously generated bibliographic and claim sections. One refinement: the earlier litigation check correctly notes the '666 itself was not an asserted patent, but US 7,715,679 and US 10,996,417 were — and US 7,715,679 does appear in the '666's own Citations list, which makes the common-ownership/§ 103(c) analysis in §6 directly relevant to any validity challenge here.
2. Reference-content verification. I verified Kline (US 2006/0210230/US 7,266,283), Gniadek (US 2008/0037945), Kewitsch (US 7,315,681), Siecor (US 5,335,874) and US 6,315,598 against full-text/secondary sources. I could not open the full text of US 7,408,814 or US 7,397,997 (tool step limit); their role in the dependent-claim mapping rests on their titles/listing and should be confirmed against the primary documents before being relied on in a written rejection.
3. Analyst opinion, not a legal conclusion. This is a preliminary § 103 assessment based on the prior-art section of the '666 page and the reference texts retrieved. A definitive opinion requires the full file wrapper, any terminal disclaimers, and (where relevant) the PTAB record for this family.

Bottom line: claims 1 and 11 would most plausibly have been obvious over Kline (US 2006/0210230/7,266,283) in view of US 6,315,598 and US 5,317,663, with Kewitsch (US 7,315,681) supplying the express motivation to rotate the termination interface rather than use an optical rotary joint (and the reel lock for claim 20); Gniadek (US 2008/0037945) and Siecor (US 5,335,874) provide alternative independent bases, subject to the § 103(c) common-ownership caveat.