US 10161786

I'll search for authoritative information on this patent number and any litigation involving it.

Let me search for litigation/docket information and the actual claim text.

Let me try to obtain the claim text and check for any appellate/litigation activity.

Summary — US 10,161,786 B2

Bottom line up front: I could confirm the bibliographic record and abstract from the patent text and from Justia/Google Patents listings. I could not retrieve the verbatim claim set, and I found no evidence of any CAFC 2026 docket involving this patent. Details and caveats below.

1. Bibliographic data (confirmed)

Sources: https://patents.google.com/patent/[US10161786B2](/patent/US10161786B2)/en ; https://patents.justia.com/patent/[10161786](/patent/10161786)

2. Abstract (verbatim)

"An illumination device comprises one or more emitter modules having improved thermal and electrical characteristics. According to one embodiment, each emitter module comprises a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device, one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs, a substrate upon which the plurality of LEDs and the one or more photodetectors are mounted, wherein the substrate is configured to provide a relatively high thermal impedance in the lateral direction, and a relatively low thermal impedance in the vertical direction, and a primary optics structure coupled to the substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure."

3. Disclosure overview (what the specification actually teaches)

The written description is broader than the title suggests — it is really two things fused together:

1. The emitter-module hardware (the nominal subject matter): a multi-color LED array plus dedicated photodetector(s) co-mounted on a substrate engineered for anisotropic thermal impedance — deliberately high lateral thermal impedance (to thermally separate adjacent LEDs and the photodetectors from one another) and low vertical thermal impedance (to conduct heat down to a copper/aluminum heat sink of roughly 200–400 W/(m·K), ~1–10 mm thick, ~3 mm in one embodiment). Two substrate architectures are described:

   • a single-layer substrate (e.g., AlN <150 W/(m·K), Al₂O₃ <30 W/(m·K), or PTFE/laminate <1 W/(m·K)), ~300–500 µm thick, with densely packed metal-filled vias ("thermally conductive lines," ~10–20 vias per line, each a couple hundred microns wide) running vertically to the heat sink; and
   • a multi-layer substrate (a preferred embodiment) comprising first routing layer / first dielectric layer / second routing layer / second dielectric layer (and optionally a third, continuous routing layer on the heat sink), where a ~30 µm dielectric with LEDs spaced ≥200–300 µm apart yields roughly 10× higher vertical than lateral thermal conductivity.
     The LEDs and photodetector(s) are encapsulated in a dome-shaped primary optics structure.

2. Calibration and compensation methodology (the bulk of the description): individual per-LED calibration at two ambient temperatures (e.g., ~25 °C and ~70 °C) and three drive currents (e.g., 10/30/100 % of max), storing Luma, x-chrom, y-chrom, photocurrent (Iph), and non-operative forward-voltage (Vfe, Vfd) measurements in a calibration table (FIG. 7); then temperature compensation (FIG. 8) and age compensation (FIG. 13) using interpolation, plus separate handling of the blue-pump portion vs. the phosphor portion of a phosphor-converted white LED using two differently-colored photodetectors (FIGS. 15–17B, 21).

Note: the material describes an "improved emitter module … described below with reference to FIG. 18A," but the figure listing in the retrieved text jumps from FIG. 18B to FIG. 19 — an internal inconsistency in the source text, not something I am correcting.

The description also cites three commonly-assigned earlier applications — 13/970,944, 13/970,964 and 13/970,990 — as the source of related temperature-compensation work.

4. Explanatory overview of the independent claims

⚠️ Stated uncertainty: The authoritative patent text I was given is truncated — it ends mid-sentence in the description ("…provides an accurate method for adjusting the individual drive currents applied") and does not include the claims section. My searches did not return the verbatim claim language either. I therefore cannot quote or definitively paraphrase the independent claims, and I will not fabricate claim text or a claim count.

What can be said with reasonable confidence, based on the abstract and the specification's consistent framing, is the likely scope of the independent claim(s):

• Claim 1 (likely, device/emitter module): an illumination device / emitter module comprising (a) a plurality of emission LEDs; (b) one or more photodetectors for detecting the illumination produced by those LEDs; (c) a substrate on which both the LEDs and the photodetector(s) are mounted, the substrate being configured with relatively high lateral thermal impedance and relatively low vertical thermal impedance; and (d) a primary optics structure (e.g., a dome) coupled to the substrate and encapsulating the LEDs and photodetector(s).
• A possible second independent claim may be directed to the substrate architecture particulars (single-layer vs. multi-layer stack, dielectric layers, thermally conductive vias/lines, heat sink coupling), since those are the distinguishing structural features the specification emphasizes — but this is inference, not verified.
• Note that much of the specification's calibration/compensation subject matter may appear only in dependent claims or may be pursued in the separate family members (see §5), so the granted claims are likely narrower and more hardware-focused than the description as a whole.

If you need the exact claim set (essential for any infringement/invalidity or claim-chart work), it must be pulled from the USPTO PatentCenter/Patent Public Search full-text record for US 10,161,786, or from the granted-PDF claim column. I flag this rather than approximate it.

5. Family / related filings (from the record)

• PCT: PCT/US2015/037660 → WO 2015/200615 A1
• EP: EP 3162167 B1; EP 3860312 A1
• CN: CN 107079549 B; CN 113784474 B; CN 109362148 B; CN 119136360 A
• JP: JP 2017526110 A; KR: KR 20170041196 A
• US continuations claiming benefit of this filing: 16/231,925 → US 10,605,652 B2; 16/834,368 → US 11,243,112 B2; 17/665,921 → US 11,740,123 B2; 18/220,774 → US 12,050,126 B2; 18/746,643 → US 12,292,326 B2; 19/026,856 → US 2025/0155280 A1

Sources: Google Patents family/priority listing at https://patents.google.com/patent/US10161786B2/en ; Unified Patents portal listing at https://portal.unifiedpatents.com/patents/patent/[6692136](/patent/6692136)

6. Litigation / CAFC 2026 docket search — result

No docket or appellate activity for US 10,161,786 was found. I searched the web for "10161786 patent CAFC 2026 docket," for Lutron/Ketra infringement and Federal Circuit appeals, and for 2026 litigation generally. The searches returned:

• the Google Patents record and Justia Patent History page (no litigation tab content surfaced), and
• a large volume of false-positive hits caused by unrelated documents that happen to contain the digit string "10161786" — most notably European patent application number EP 10 161 786 A ("Dental superstructure, and a method of manufacture thereof"), which is a different identifier in a different numbering system and has nothing to do with this US patent. I am flagging this expressly because it is exactly the kind of near-match that should not be conflated with US 10,161,786.

I want to be explicit about the limits here: I could not access Docket Navigator, PACER, or the CAFC docket directly through the available tooling, and generic web search is a weak instrument for appellate dockets. So the statement "no CAFC 2026 docket found" should be read as "my available searches returned no such case," not as "no such case exists." A negative litigation finding for an LED-lighting patent owned by Lutron Technology Company should be verified against PACER/CAFC CM-ECF and CourtListener before being relied upon.

7. Items I am explicitly uncertain about

1. Verbatim claims and claim count — not available in the supplied text or my searches; do not quote claims of this patent from any secondary summary.
2. Existence of any 2025–2026 CAFC appeal or district-court case — unverified; negative finding only.
3. The FIG. 18A reference — the specification cites an "improved emitter module … described below with reference to FIG. 18A," but the figure list in the source text shows 18B and onward; possible OCR/extraction artifact in the source rather than a patent defect.
4. Class 315/291 "Current And/or Voltage Regulation" appears as the current US class on Justia, which sits somewhat oddly with the G01J photometry primary classification — a classification-assignment curiosity, not a substantive finding.

I'll search litigation sources for US patent 10,161,786.

Let me search more targeted litigation databases.

Litigation search results for U.S. Patent No. 10,161,786

Bottom line: I found no litigation — district court, Federal Circuit, ITC, or PTAB — in which U.S. Patent No. 10,161,786 ("Emitter module for an LED illumination device," Lutron Ketra LLC / Lutron Technology Company LLC) appears as an asserted or challenged patent.

I need to flag the limits of that answer: three of my follow-up queries (targeted at Docket Alarm/Justia/PACER aggregators and at Lutron-Ketra enforcement campaigns) were cut off before returning results, so my conclusion rests on the searches that did complete rather than on an exhaustive docket sweep.

What I searched and what came back

The Google Patents record for US10161786B2 (fetched 2026-09-24) likewise shows no litigation or "lawsuits" section, only prosecution/assignment events (Ketra, Inc. → Lutron Ketra, LLC (2018‑04‑17) → Lutron Technology Company LLC (2021‑01‑08)), foreign family filings, and continuation priority to US 16/231,925, US 16/834,368, US 17/665,921, US 18/220,774, US 18/746,643 and US 19/026,856.

Related Lutron/Ketra matters I did find — but none involve '786

I'm listing these explicitly so they are not mistaken for '786 litigation:

• IoT Innovations LLC v. Lutron Electronics Co., Inc. — S.D. Fla., filed 12 March 2025; transferred 30 March 2026 to C.D. Cal., case No. 0:25-cv-60483. Accused products include Lutron's HomeWorks QSX, RadioRA 3, Ketra, Vive, Athena and Hyperion platforms. The seven asserted patents are US 8,401,571; US 7,974,266; US 7,974,260; US 7,280,830; US RE044742; US 7,40x,xxx (list truncated in the source). US 10,161,786 is not among them.
• Lutron Electronics Co. v. Savant Systems — keypad/design dispute filed ~August 2019, reportedly dismissed/settled November 2019. Relates to Lutron keypad patents, not the LED emitter-module patent.
• No PTAB proceeding (IPR/PGR) naming 10,161,786 appeared in the Unified Patents PTAB caselist material retrieved.

Required caveats

1. Do not infer from absence. A negative result in free web sources is not proof of non-litigation. District court complaints asserting '786 could exist and simply be poorly indexed. Authoritative verification requires the USPTO Patent Center "Litigation" tab, Docket Alarm / Lex Machina / PACER docket searches on "10,161,786" and on assignees Lutron Ketra, LLC and Lutron Technology Company LLC, plus ITC EDIS. Note also that many LED-sector disputes settle or are arbitrated and never appear in indexed dockets.
2. Identifier discipline. Per your instruction, I did not auto-correct identifiers. Note that "10161786" also appears as an EP application number (EP 10161786, filed 2007‑08‑22, a dental superstructure) and as the numeric body of US 10,161,786. These are entirely different things; the EP hits are not evidence about the U.S. patent.
3. Patent status is separate from litigation. The '786 patent is recorded as Active, adjusted expiration 2037‑04‑22, with a term adjustment of 1,032 days under 35 U.S.C. § 154(b) noted on the face of the patent. That is a prosecution/term fact, not a litigation finding.

If your objective is a freedom-to-operate or enforcement-risk assessment, I'd recommend confirming this negative against paid docket databases rather than relying on this memo, given that my check of the aggregator sites did not complete.

I'll start by checking the structured source of truth, then run targeted web searches to see whether anything exists beyond the ODP index.

No PTAB hits on the first pass. Let me search the patent owner's litigation history and the family members, since assertion activity usually precedes IPRs.

Let me check the family members and any Unified Patents / defensive-aggregator activity, plus the patent owner's litigation docket.

Proceedings overview

Zero AIA trial proceedings on file for US 10,161,786. The structured "PTAB proceedings on file" block returns nothing from the USPTO Open Data Portal, and my independent web searches surfaced no IPR, PGR, or CBM naming this patent — so the count is 0 total: 0 active, 0 claims invalidated, 0 claims sustained, 0 settled, 0 institution denials. Bottom line for a defendant: this is not a "hardened by surviving IPRs" patent and it is not a "claims already canceled" patent — it is an untested patent. There is no PTAB record to lean on, no Federal Circuit mandate narrowing it, and no § 315(e)(2) estoppel working in your favor. Your invalidity case would have to be built from scratch.

Proceedings overview — detail

There are no proceedings to enumerate. Nothing goes to the top of the list because the list is empty.

For completeness, here is what I checked and what I ruled out:

Red herrings I affirmatively excluded (so you don't waste time chasing them):

• IPR2015-01287 through IPR2015-01294 — Wangs Alliance Corporation d/b/a WAC Lighting v. Koninklijke Philips N.V. / Philips Lighting North America. These are real, well-documented 2015 IPRs, but the challenged patents are U.S. 6,013,988; 6,147,458; 6,250,774; 6,561,690; 6,586,890; and 7,038,399 — all Philips LED patents from the 1990s–2000s. Nothing to do with the '786 patent or with Ketra. See the Board's own family table in the IPR2015-01292 institution decision: http://edisonreport.com/files/4014/4971/4907/decision_granting_institution-8_2-1.pdf
• IPR2018-00790 — again on Philips' 7,038,399, six years after the earlier wave. Not this patent.
• US 10,891,608 / PGR2021-00084 — PayRange v. KioSoft, an unrelated payment-systems patent. Different field entirely.

The '786 patent's posture, in lieu of a proceeding record

Because there is no PTAB paper trail, a few facts about the patent itself matter more than usual:

• Priority / filing date: 2014-06-25 (application 14/314,482). Issued 2018-12-25. Term shows as Active, expires 2037-04-22 per Google Patents (https://patents.google.com/patent/US10161786/en). A patent with a 2037 expiry and no IPR to date is a long-running exposure.
• Post-grant windows you can rule out: the PGR window (9 months from grant) closed on 2019-09-25. CBM is doubly unavailable — the patent is AIA/first-inventor-to-file era, and the CBM transitional program sunset on 2020-09-16. IPR is the only AIA vehicle left, and it remains available indefinitely.
• Claim set: I could not verify the exact claim numbers or their scope from the material available to me. The retrieved text is heavy on the specification and the calibration/compensation flowcharts; the claims themselves did not come through the fetch. Do not assume a claim count. Treat every claim as UNTESTED.
• Family depth is the real signal — the front page lists continuation/divisional grants including US 10,605,652 (from 16/231,925), US 11,243,112 (from 16/834,368), US 11,740,123 (from 17/665,921), US 12,050,126 (from 18/220,774), and US 12,292,326 (from 18/746,643), with a further application published as US 2025/0155280A1 from application 19/026,856. The same disclosure also flowed into EP 3162167 B1 (and divisional EP 3860312 A1), CN 107079549 B, CN 113784474 B, CN 109362148 B, KR 20170041196 A, and JP 2017526110 A.

I flag this because it reframes the defensive problem: your opponent is not one patent, it is a chain of continuations that keep issuing. Validating the '786 claims through an IPR is a one-patent fix; the asserted claim may simply be re-drafted into a still-pending continuation. Any serious defense strategy has to account for the pending application (19/026,856) as well as the issued patent.

Strategic summary

Claim status: entirely UNTESTED — not canceled, not sustained. No claim of US 10,161,786 has ever been construed by the PTAB, and no claim has been canceled, confirmed, or amended in an AIA trial. There are therefore no "surviving claims" to list and no narrowing amendment to exploit. The claims carry the ordinary statutory presumption of validity, and you would be litigating them on a blank slate. Contrast this with a patent that has been through IPR: the FWD record would have given you the panel's constructions, its treatment of the prior art, and its view of the dependent claims. None of that exists here.

Estoppel landscape: no estoppel operates against anyone. Section 315(e)(2) estoppel only attaches to a petitioner that reaches a final written decision. Because no petition has ever been filed, there is no prior petitioner, no privity chain, and no set of prior-art grounds that has been "used up." For a defendant today, that cuts both ways: the entire universe of § 102/§ 103 art remains available to you in an IPR, but you also get no free ride from someone else's earlier work. The practical grant of immunity you would normally look for — "the strong art was already run and the patentee stipulated to the scope" — is absent. One timing point to calendar if you are sued: § 315(b)'s one-year bar runs from service of the complaint, and § 315(a)(1) bars an IPR if you first filed a civil action challenging validity.

Pattern signals: the usual markers of a well-tested patent are all missing. There is no repeat petitioner on this patent (there is no petitioner at all). The patent owner has not had to defend a PTAB appeal for the '786 patent, so there is no Federal Circuit docket number, no Rule 36 affirmance, and no opinion to read. No defensive aggregator — Unified Patents or otherwise — appears anywhere in the chain; the assignment history runs cleanly Ketra, Inc. → Lutron Ketra, LLC (2018-04-17) → Lutron Technology Company LLC (2021-01-08), all regular corporate reassignments, which is consistent with Lutron's acquisition of Ketra rather than any NPE-style assertion campaign. The absence of PTAB activity is itself the signal: patents that are aggressively asserted against well-funded defendants tend to attract IPRs, and this one hasn't. That is equally consistent with (a) the patent being licensed rather than litigated, or (b) the portfolio being asserted through sibling continuations instead of this specific grant. You should not read the silence as a clean bill of health.

Recommended next steps

• Verify against the primary source before you rely on this. I could not reach PTAB E2E or the ODP API directly in this session; the "no proceedings" finding rests on the structured block plus negative web-search results. Run the patent number through PTAB E2E (https://ptacts.uspto.gov/ptacts/) and the ODP API yourself, and check Docket Alarm for the '786 patent specifically. If a petition was filed in the last few weeks, ODP may not have ingested it yet.
• There is no FWD to link to and none to quote. Do not let anyone on your team cite a "PTAB decision invalidating claims of the '786 patent" — no such decision exists.
• Check district court dockets rather than the PTAB. Since ODP is empty, the useful question is whether the '786 patent (or its siblings 10,605,652 / 11,243,112 / 11,740,123 / 12,050,126 / 12,292,326) has been asserted at all. A live complaint changes the § 315(b) clock immediately.
• If you are sued on this patent, IPR is your cleanest AIA option — PGR is time-barred (window closed 2019-09-25) and CBM is both inapplicable and sunset. Budget for the statutory timeline: institution decision within ~6 months of filing, then a hard 1-year trial deadline from institution to FWD under § 316(a)(11).
• Pull the file histories of the sibling continuations. Because the disclosure is shared, art that reads on the '786 claims likely reads on the siblings, and prosecution statements made in the continuation file histories may supply § 325(d) arguments or, conversely, give the patent owner a chance to amend around your art in a still-pending case. Given the scale of the family, that review is the highest-value next step.

Confidence notes. High confidence that the ODP structured record shows no AIA trial for this patent. Moderate confidence that no petition exists at all — my web searches were negative but not exhaustive, and I could not query PTAB E2E or CourtListener directly in this session. I did not verify the '786 claim set and have deliberately not stated claim numbers or a claim count.

I'll research the assignment record. Let me start with searches on the primary sources.

US 10161786 — Assignment & Ownership Reconstruction

Scope note / sourcing caveat: I was able to retrieve the patent's own bibliographic and legal-events data (Google Patents, fetched 2026-09-24) plus corroborating press and corporate-identity sources. I was not able to load USPTO Assignment Center or the legacy assignment search in this session (searches returned no assignment-index hits). Accordingly, the conveyance chain below is grounded in the recorded legal-events data on the patent itself, which is reliable, but the reel/frame numbers and the correspondent-of-record are not verified and are marked as such rather than guessed. I will not fabricate reel/frame pairs.

Inventors

Pattern notes:

• All three are named on a large cluster of Ketra-family patents filed 2013–2015 (e.g., US 9392663, US 9769899, US 10595372, US 11243112), which is consistent with a tight in-house R&D bench at a single startup, not a scattered inventor pool.
• No evidence of inventor departure-within-12-months / fire-sale precursor. The inventors did not leave the portfolio behind: the same inventors (notably Ho and Malone) continue to appear as inventors on later Ketra/Lutron continuations. This is an organic corporate-acquisition chain, not an inventor-abandonment chain.
• Continuation family (all naming overlapping inventors, all now Lutron-owned): US 16/231,925 → US 10,605,652; US 16/834,368 → US 11,243,112; US 17/665,921 → US 11,740,123; US 18/220,774 → US 12,050,126; US 18/746,643 → US 12,292,326; and US 19/026,856 → US 2025/0155280 A1. Reissues US RE48955 and US RE48956 also sit in this family under Lutron Technology Company LLC.

I could not independently determine the inventors' individual employment agreements or whether any of them signed separate proprietary-information agreements — that data is not in the sources I could reach.

Original assignee

Ketra, Inc. (later restructured as Lutron Ketra, LLC; the issued patent's printed assignee of record is Lutron Ketra, LLC, reflecting the 2018 assignment having been recorded before the 2018-12-25 grant).

• Line of business: multi-colored/tunable LED illumination systems — driver ICs, control algorithms, calibration methods, optics, and luminaires for human-centric lighting. Ketra's own marketing materials claim "over 70 patents" and products such as the D3 downlight, A20 lamp, N3 satellite, and TruBeam optics (assets.lutron.com; brandfetch.com/ketra.com).
• Did they ship a product embodying the claims? Yes. US 10,161,786 is an emitter module patent (substrate, emission LEDs, photodetectors, primary optics, heat sink). Ketra shipped emitter-module-based luminaires commercially, and the product line continued post-acquisition under the Ketra brand and later under Lutron's Athena platform.
• Current status: Operating, acquired. Ketra was acquired by Lutron Electronics Co., Inc. in 2018 — the acquisition announcement is well documented (buildings.com; Crunchbase acquisition profile "Lutron Electronics acquires Ketra"; multiple dealer pages state "In 2018, Ketra was acquired by Lutron"). Ketra operates today as a brand of Lutron Ketra LLC, not as an independent company, and is not dissolved or in bankruptcy.

Assignment timeline

Reel/frame not retrieved. Assignment Center and the legacy assignment index did not return results in this session. The entries below are reconstructed from the patent's recorded legal events, which show the events but not the reel/frame. Treat every "Reel #######/####" below as unverified.

2014-06-25 (executed ~2014-06-25) / recorded 2014-06-25 — Reel not retrieved

• Conveyance: Assignment of assignors' interest
• Assignor: CHANG, KUO-LIH; HO, HORACE C.; MALONE, Mickey
• Assignee: KETRA, INC. (Delaware)
• Correspondent: not retrieved
• Context: Original employment/startup assignment — the three inventors conveyed their rights in application US 14/314,482 to their employer Ketra, Inc. simultaneously with filing.

2018-04-17 (executed ~2018-04) / recorded 2018-04-17 — Reel not retrieved

• Conveyance: Assignment (acquisition / corporate transfer)
• Assignor: KETRA, INC.
• Assignee: LUTRON KETRA, LLC
• Correspondent: not retrieved
• Context: Acquisition — Lutron's purchase of Ketra; the portfolio was conveyed into the Lutron Ketra, LLC operating subsidiary approximately eight months before the patent granted on 2018-12-25.

2021-01-08 (executed ~2021-01) / recorded 2021-01-08 — Reel not retrieved

• Conveyance: Assignment (intra-group transfer)
• Assignor: LUTRON KETRA, LLC
• Assignee: LUTRON TECHNOLOGY COMPANY LLC
• Correspondent: not retrieved
• Context: Internal reorganization — IP consolidation into Lutron's principal IP-holding entity; this is the assignee of record on the reissue and continuation patents in the same family (e.g., US RE48955, US RE48956, US 11,243,112, US 12,292,326).

No other assignments appear in the legal-events record — no security agreements, no licensee recordings, no further conveyances.

Timeline diagram

timeline
    title Ownership of US 10161786
    2014 : Filed by Ketra Inc
         : Inventors assign to Ketra Inc
    2018 : Ketra Inc assigned to Lutron Ketra LLC
         : Patent issued 25 Dec
    2021 : Assigned to Lutron Technology Company LLC

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT.
The only LLCs in the chain are Lutron Ketra, LLC and Lutron Technology Company LLC, both of which are Lutron group operating/holding entities tied to Lutron Electronics Co., Inc. (Coopersburg, PA). Lutron Ketra LLC is an active commercial brand — it holds trademarks (Ketra, TruBeam, Color Lock) and its products are marketed on lutron.com with a ©2020 Lutron Ketra LLC notice and a Coopersburg, PA contact address. This is the opposite of an anonymous registered-agent-service shell: named operating entity, real products, real brand, same corporate family as the acquirer. 2018-04-17 conveyance is a genuine acquisition, not a shell drop.

2. Known asserter in the chain — NOT PRESENT.
Checked against the named NPE universe (Acacia, Marathon, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, Spangenberg entities). None appear. Both assignees are Lutron corporate entities; neither appears on RPX/Unified Patents high-frequency-plaintiff directories in the material surfaced here. No adversarial litigation against this patent was found.

3. Repeat correspondent across the chain — UNCLEAR / UNVERIFIABLE.
The correspondent of record for each recording (the attorney/firm who filed the assignment) could not be retrieved, so I cannot test for a repeat-player attorney. This is an open data gap, not a negative finding. Given that both post-2014 conveyances are intra-corporate Lutron transfers, recurrence of a single Lutron IP counsel or a single Lutron outside firm would be expected and benign in this chain — it would not constitute an NPE tell.

4. Cascading transfers — NOT PRESENT.
Only two post-filing transfers, spread over ~7 years (2018-04-17 and 2021-01-08), both unidirectional within one corporate family. There is no chain of unrelated LLCs, no common-principal pattern across distinct names, and no <24-month cascade.

5. Pre-litigation transfer — NOT PRESENT.
No infringement suit naming this patent was located. The 2018 and 2021 transfers are therefore not pre-litigation venue/standing arrangements; they map cleanly onto (a) an acquisition and (b) a routine post-acquisition IP consolidation.

6. Bankruptcy fire-sale — NOT PRESENT.
Ketra was acquired as a going concern in 2018 (Lutron announced the acquisition; Ketra continued as a brand). No Chapter 7/11, no 363 sale, no distressed disposal. The 2018 transfer is dated ~8 months before the patent granted, i.e., a pre-grant portfolio transfer incident to an M&A deal.

7. Privateering — NOT PRESENT (no evidence).
No SEC filing, Patent Progress, or EFF coverage surfaced showing Lutron pushing this patent to an NPE for assertion against competitors. Lutron is itself the end-point owner and itself sells the products.

8. Defensive aggregator — NOT PRESENT.
The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. It terminates at an operating company's IP holding entity.

Verdict

Operating-company assertion — with an explicit qualification on the "assertion" prong.

Justification: The chain is a clean two-step corporate sequence — Ketra, Inc.'s portfolio assigned to Lutron Ketra, LLC on 2018-04-17, then consolidated into Lutron Technology Company LLC on 2021-01-08 — with the original 2014 inventor-to-Ketra assignment at filing. Every entity in the chain is a Lutron operating/holding entity that sells products embodying the claims (Ketra luminaires, then Lutron's Athena platform); none is a litigation vehicle, none is on any public NPE list, and none is a registered-agent shell. All eight NPE signals are absent or unverifiable (signal 3 only, for lack of correspondent data). I specifically note that no assertion activity by Lutron against this patent was found, so the "assertion" element of this verdict label is unsubstantiated — the "operating company, non-NPE" characterization, however, is solid. If the required taxonomy is applied strictly, this is an operating-company chain and should not be flagged as an NPE.

Verification link: USPTO Assignment Center — search by patent number 10161786 (also mirrored at assignment.uspto.gov). When the records load, the two items to capture that I could not are (i) the reel/frame of the 2018-04-17 Ketra→Lutron Ketra, LLC assignment and (ii) the correspondent of record on both post-2014 recordings — the latter being the specific field requested and the one field genuinely missing from this reconstruction.

I'll search for the prior-art citations on the face of US 10,161,786 and related sources.

Let me pull the front-page reference list from authoritative sources.

Let me try to retrieve the granted-PDF front page and the Justia reference list directly.

Prior-Art Analysis — US 10,161,786 B2

⚠️ Scope-of-search statement (read first)

I have to be straight with you about what I was and was not able to retrieve, because the requested deliverable — "look at each patent citation for 10161786, and for each reference state what it anticipates under § 102" — depends entirely on a document I could not obtain.

1. I could not retrieve the "(56) References Cited" block from the face of US 10,161,786. The authoritative full text I was given is truncated (it ends mid-description and contains no front-page citation list and no claims). My web searches for the citation list returned pages about the patent and pages of adjacent documents (e.g., the citation tables of WO 2010/124315 A1, EP 3 318 536 A1, US 10,710,022, US 10,906,285), not the front page of the '786 patent itself.
2. My tool is a general web-search tool, not a direct query of the USPTO full-text database. I did not and cannot query Patent Public Search / PatFT / PatentCenter directly. I will not label web-search hits as "USPTO search results," because they are not.
3. Claims are unavailable (a limitation already flagged in the previously generated Patent Summary — I am building on that, not contradicting it). A § 102 anticipation analysis is a claim-by-claim exercise; without the claim text I cannot legitimately say "Reference X anticipates claim Y."

Consequence: If I now produced a tidy table of "examiner-cited references and the claims each anticipates," I would be fabricating it. I am not going to do that. What follows is (a) the prior-art framework that is verifiable from the record, (b) the only prior-art-adjacent citations that are documented in the authoritative text, (c) research leads with explicit confidence labels, and (d) an exact retrieval recipe so you can get the real list in minutes.

1. § 102 framework — an important threshold point that is verifiable

The '786 patent has an effective filing date of June 25, 2014 (application 14/314,482; no earlier domestic priority is claimed on the face of the record). That is after March 16, 2013, so the AIA first-inventor-to-file provisions govern (35 U.S.C. § 102 as amended). This materially changes the analysis versus what secondary sources often assume:

The previously generated Litigation Summary noted the patent is Active with an adjusted expiration of 2037-04-22 (1,032 days of § 154(b) term adjustment). That is a term fact, not a prior-art fact.

2. What the "prior art keywords" and classifications tell us (verifiable)

The record's own prior-art keyword set is: "leds; led; illumination device; emission; drive current." The classifications are G01J 1/02, 3/02, 3/46, 3/50, 1/32, 1/44, 1/42 (photometry/colorimetry/compensation) plus H05B 45/20, 45/46, 47/19 (LED colour control, LED matrix detail, wireless control). This confirms the search field the examiner worked in: LED photometric feedback + anisotropic thermal substrate. It does not tell us which references were cited.

3. Prior-art-adjacent references that ARE documented in the authoritative text

These are the only references the authoritative specification names. They are cited as related, commonly-assigned work — not as examiner citations — and I flag the distinction explicitly.

The specification also states that the later FIG. 13 age-compensation method "further improves upon" these applications — i.e., the patent is positioning itself as an improvement over A–C, which is an applicant-admission of what A–C disclose (useful for claim construction and for § 103 motivation-to-modify arguments, even if A–C are not § 102 art).

Do not quote grant numbers for A–C. I could not verify from my sources which patents these applications issued as. Given the Lutron/Ketra "Interference-resistant compensation for illumination devices" reissues (US RE48,955 E1; US RE48,956 E1) surface repeatedly in this family's neighbourhood, A–C plausibly relate to that line — but that is an unverified inference and I am labeling it as such.

4. Unverified lead — EP 2647262 B1 (Howard University)

In a search-result table of a document that lists the '786 patent (an EPO-style "documents cited / published" block), EP 2647262 B1 — "Lighting device and method," Howard University, priority 2010-12-03, granted 2023-08-30 — appears with an asterisk, the conventional EPO marker for a search-report citation.

• Confidence: LOW–MODERATE. The asterisk and the co-listing are suggestive that EP 2647262 B1 was cited against a family member — most plausibly against the EP counterpart EP 3162167 B1 (the European sibling of this U.S. patent), since EPO search reports for a family share art.
• I could not confirm on which application's search report it appeared, in what category (X/Y/A), or against which claims.
• Do not treat this as a confirmed '(56)' citation of US 10,161,786.

If verified, EP 2647262 (a phosphor-converted/colour-mixing lighting device with photometric sensing, Howard University) would be a plausible § 102(a)(1)/§ 103 reference against calibration/compensation-type claims, and possibly against the photodetector-plus-emitter-module architecture — but again, without the claims, no anticipation mapping is possible.

5. What is not prior art (guardrails)

• WO 2015/200615 A1 / PCT/US2015/037660 — filed June 25, 2015, i.e., after the '786 filing date and claiming priority to it. It is a family member, not prior art.
• US 10,605,652 B2; US 11,243,112 B2; US 11,740,123 B2; US 12,050,126 B2; US 12,292,326 B2; US 2025/0155280 A1 — continuations claiming benefit of the '786 filing; same-family, not prior art.
• The "Cited By (70)" list (Ketra/Lutron patents such as US 9,276,766; US 9,295,112; US 9,509,525; US 10,847,026; US 8,456,092; US 8,471,496; US 8,521,035; US 8,674,913 …) — these cite the '786 patent; they are forward citations and have no § 102 significance.
• EP application 10161786 A ("Dental superstructure…," filed 2007-08-22) — a different identifier in a different numbering system, unrelated. Same caution as in the prior sections.

Research lead (clearly labeled): the PubChem patent record for the descendant US 12,050,126 B2 ("Emitter module for an LED illumination device") exposes a large U.S./WO document list (e.g., US 2010/0188972 A1; US 2011/069960 A1; US 8,013,538 B2; US 8,044,899 B2; US 8,076,869 B2; US 8,471,496 B2; US 8,521,035 B2; WO 2010/124315 A1; US 7,828,479 B1 …). These are citations associated with a descendant of '786, not confirmed citations of '786, and the list appears to mix "references cited" with "similar documents." It is a lead only — it should be de-duplicated and verified against the '786 front page before use.

6. Exact recipe to obtain the true citation list (so the deliverable can be completed properly)

To do the assignment you actually asked for, pull these four artifacts; each gives the (56) citations and, in the first two cases, the examiner's own claim mapping:

1. Granted-PDF front page — patents.google.com/patent/US10161786B2/en → "Download PDF" → page 1, columns headed References Cited (U.S. Patent Documents / Foreign Patent Documents / Other Publications). This is the authoritative list.
2. USPTO Patent Public Search (ppubs.uspto.gov) → search 10161786 → "Examiner cited references" tab, which separates US-PGPUB / USPTO / EPO / JPO / DERWENT / IBM_TDB citations.
3. File wrapper — PatentCenter → Application 14/314,482 → Documents & Transactions → the Non-Final/ Final Office Actions and the Notice of Allowance, where each § 102/§ 103 rejection names the reference and the specific claims rejected (this is the only place an examiner's own anticipation mapping exists).
4. The claims — same file wrapper (or the granted-PDF claim column). A defensible § 102 chart cannot be built without them. Note the previously generated summary's finding that the claim set was not retrievable — that gap must be closed before any anticipation opinion is issued.

For each retrieved reference, the § 102 statement should take the form: "Reference R, [full citation], published/filed [date], qualifies under § 102(a)(1) [or (a)(2)], and discloses every element of claim N as arranged therein, specifically: [element-by-element map]." Anything short of that is a § 103 obviousness argument mislabeled as "anticipation."

7. Items I am explicitly uncertain about (restated for this task)

1. The (56) citation list of US 10,161,786 — not retrieved; therefore no reference is confirmed as an examiner-cited prior-art document.
2. Any § 102 anticipation mapping — impossible without claim text; not attempted.
3. The exact issued patents corresponding to Ser. Nos. 13/970,944 / 13/970,964 / 13/970,990 — unverified.
4. Whether EP 2647262 B1 is a family-prosecution citation — plausible but unconfirmed; likely pertains to EP 3162167 B1 rather than the U.S. patent.
5. Note the internal inconsistency already flagged in the prior Patent Summary — the specification cites an "improved emitter module … described below with reference to FIG. 18A," while the figure list in the source text jumps from 18B to 19. I am not correcting it; it may be an extraction artifact. If the real FIG. 18A shows structural detail, it matters for the emitter-module claims and thus for which structural references are relevant.

Bottom line: the framework (AIA § 102), the prior-art keyword/classification field, and three commonly-assigned related applications (A–C) are established; the actual examiner citations and any claim-level anticipation conclusion are not, and I would need the granted front page plus the claim set to deliver them without fabricating.

I'll pull the prior-art citations listed on this patent's record before analyzing.

Let me try to pin down the exact prior-art citation list and the granted claim text.

I have claim 1 now. Let me try to get the remaining claims and the exact prior-art list.

Memorandum — Obviousness analysis of US 10,161,786 B2 under 35 U.S.C. § 103

Date: April 26, 2026 (task date) · Patent under review: US 10,161,786 B2, Emitter module for an LED illumination device (app. 14/314,482, filed 2014‑06‑25, issued 2018‑12‑25; Lutron Ketra / Lutron Technology Company LLC)

0. Two corrections to the earlier sections before I begin

Flagging a contradiction, as instructed. The previously generated Patent summary section stated that the claim set was unavailable and that I therefore "cannot quote or definitively paraphrase the independent claims." That is now superseded. I retrieved the verbatim text of claim 1 from the RPX Insight record for this patent (https://insight.rpxcorp.com/patent/[US10161786B2](/patent/US10161786B2)). The earlier section's inference that claim 1 would recite the substrate generically — "configured with relatively high lateral thermal impedance and relatively low vertical thermal impedance" — is wrong in an important way:

• Claim 1 requires a multiple layer substrate with a specific four‑layer stack and a heat sink. That means the specification's single‑layer‑substrate embodiment (and the entire "single layer substrate … FIG. 18B" discussion, plus the 300–500 µm AlN/Al₂O₃/PTFE variants) is outside the issued claim. Any obviousness analysis keyed to the abstract ("a substrate") is analyzing unclaimed subject matter. Only the multiple‑layer embodiment is claimed.
• The earlier section's speculation that "a possible second independent claim" covers substrate architecture is consistent with what I found — claim 1 is the substrate‑architecture claim.

On the "Prior Art section." I have to be blunt about a limitation here. Google Patents' "Prior Art" / citation sections for US10161786B2 did not render cleanly through the tooling available to me. What I could confirm from the patent's own record is only the metadata layer: Prior art keywords — "leds," "led," "illumination device," "emission," "drive current"; Prior art date — 2014‑06‑25; Cited By (31), whose visible members include US 9,466,776 B1, WO 2017/129633 A1 (Prediktor Medical — calibrating LED output), US 2017/0322155 A1 (Osram GmbH — lighting device), and US 10,420,185 B2. The searches also surfaced citation lists belonging to neighbouring documents (WO 2010/124315 A1; US 11,118,981; US 9,863,605; US 10,746,374; US 9,256,018) and to the continuation US 11,243,112. I am therefore labeling every reference below by attribution confidence. I did not obtain a verified "Patent Citations" list for US10161786B2 itself, and I will not pretend otherwise.

One analytically useful thing the metadata does tell us: the indexed prior‑art keywords are drive‑current / emission-centric, not substrate‑ or thermal‑design‑centric. That maps to the calibration/compensation half of the disclosure (which, as the earlier summary noted, appears to be largely unclaimed) rather than to the claimed multi‑layer substrate.

1. The claim to be analyzed (verbatim, claim 1)

"1. An illumination device comprising one or more emitter modules, wherein each emitter module comprises:
a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device;
one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs;
a multiple layer substrate upon which the plurality of LEDs and the one or more photodetectors are mounted;
a primary optics structure coupled to a top surface of the multiple layer substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure; and
a heat sink coupled to a bottom surface of the multiple layer substrate; and
wherein the multiple layer substrate comprises;
a first routing layer coupled to electrical contacts of the plurality of LEDs and the one or more photodetectors;
a first dielectric layer coupled to a bottom surface the first routing layer and configured for providing electrical isolation between the electrical contacts and the heat sink;
a second routing layer coupled to a bottom surface of the first dielectric layer and configured for routing signals between the first routing layer and external electrical contacts arranged outside of the primary optics structure; and
a second dielectric layer coupled to a bottom surface of the second routing layer and configured for providing a relatively high thermal impedance in a lateral direction, and a relatively low thermal impedance in a vertical direction."

(Source: https://insight.rpxcorp.com/patent/US10161786B2. I did not retrieve the dependent claims; see §6.)

Governing law. The application was filed 2014‑06‑25, after the AIA's 2013‑03‑16 cutoff, so AIA §§ 102/103 apply. Two consequences matter:

• § 102(b)(2)(C) (common‑ownership exception). The entire Ketra/Lutron family that a searcher will inevitably surface — US 9,392,660; US 9,392,663; US 9,736,903; US 9,510,416; US 9,237,612; US 9,485,813; US 11,272,599; and the continuation chain on the '786 itself — is not available as prior art, because the subject matter and the claimed invention were commonly owned by Ketra, Inc. at the effective filing date. Same for the grandparent applications 13/970,944 / 13/970,964 / 13/970,990 named in the specification. This removes what look like the most on‑point references from the § 103 case. Any invalidity theory built on Lutron's own family is a nullity. I flag this because it is the single most common mistake a searcher makes on this patent.
• PHOSITA. I would define the person of ordinary skill as holding a B.S. in electrical, mechanical, or materials engineering (or equivalent) and having roughly 2–5 years of experience in LED lighting fixtures, LED packaging, or thermal management of electronics — including working familiarity with metal‑core/insulated‑metal PCBs (MCPCB/IMS), ceramic (AlN, Al₂O₃) and LTCC substrates, thermal vias, and LED driver/feedback electronics. The claim's own recitations ("routing layer," "dielectric layer," "heat sink," "primary optics structure," relative thermal impedance) are all within that skill set.

2. Element‑by‑element mapping of claim 1

Observations that matter for the legal analysis:

1. Every structural element (B–J) is a packaging/board element, not an algorithmic one. There is no calibration, interpolation, photocurrent‑scale‑factor, or phosphor‑aging limitation anywhere in claim 1 — despite that material occupying the bulk of the specification. The claimed invention is a board‑stack claim.
2. Element J is the only element that is arguably unusual, and even it is a relative, functional recitation ("relatively high … relatively low") whose only support is the specification's statement that a ~30 µm dielectric with LEDs spaced ≥200–300 µm apart yields about a 10:1 vertical:lateral conductivity ratio.
3. Element C + I are the commercial differentiators (co‑packaged detector; routing brought out from under the dome), and both are visible in the mid‑2000s art.

3. Candidate prior‑art references surfaced by the record, with attribution confidence

Where the case is thin. The element that needs a specific, verified teaching is D + I + J taken together — a multilayer LED substrate with a top routing layer, a first dielectric, a buried second routing layer, and a second dielectric doing vertical thermal conduction via vias. That teaching unquestionably existed by 2014 (insulated metal substrates, direct‑bonded‑copper AlN ceramics, and multilayer metal‑clad PCBs with thermal vias were all mature commercially — the specification itself treats all of it as off‑the‑shelf, quoting standard material constants: AlN <150 W/(m·K), Al₂O₃ <30 W/(m·K), laminate <1 W/(m·K), metal 200–400 W/(m·K)). But I could not verify a single document in the retrieved record that squarely discloses the four‑layer stack. A § 103 challenge has to close that gap with a properly located reference, not with an assertion. That is the honest state of the record.

4. Combinations that would render claim 1 obvious

The motivation analysis is unusually strong here because the specification itself supplies it. The '786 describes the single‑layer substrate as thermally good but electrically deficient — it "may not provide the electrical characteristics that are desired in some emitter modules" — and then presents the multilayer substrate as the answer, because it "provides enhanced routing flexibility for connecting chains of the emission LEDs together, and electrically isolates the emission LEDs and photodetectors from the heat sink." That is a stated, routine engineering trade‑off, which is exactly the posture in which KSR directs a finding of obviousness: a known problem in the field, a finite number of identified solutions (single‑layer vs. multilayer; ceramic vs. laminate; vias vs. no vias), and a predictable result.

Ground 1 — [US 2006/0012986 A1] in view of [multilayer metal‑clad / insulated‑metal LED substrate art].

• Coverage: '86 supplies B, C, D, E — a multi‑emitter LED array package with an internal optical feedback element and control circuitry, mounted on a common substrate with an optical element over the array. The substrate reference supplies D, F, G, H, I, J — a top metal circuit layer, a dielectric for isolation from a metal base, a second/buried routing layer, and a thin dielectric over an aluminum/copper base with thermal vias.
• Motivation: the '786's own stated problems — (i) need to electrically isolate emitter and detector contacts from a conductive heat sink; (ii) need to route signals out from under the encapsulating dome; (iii) need high routing density because four colour chains plus detectors share the top layer. A multilayer metal‑clad board with thermal vias solves all three while preserving the vertical thermal path. KSR, 550 U.S. 398, 417 (2007) (design incentives and market forces; "a court must ask whether the improvement is more than the predictable use of prior art elements according to their established functions").
• Reasonable expectation of success: high — no new mechanism is required; the combination uses each element for its known purpose.

Ground 2 — [US 2006/0012986 A1] in view of [US 8,253,666 / US 7,806,315 / US 7,202,608 family] in further view of [MCPCB/IMS substrate art].

• Coverage: adds the motivation limb for element J. The Exclara/Point Somee and TIR references are directed to regulating wavelength shift and perceived colour as intensity and temperature vary — i.e., they recognize that junction‑temperature drift differs by emitter colour and must be tracked. Once individual emitters must be individually characterized, it follows directly that each emitter's measurement must not be corrupted by heat from its neighbours, and the ordinary artisan would reach for thermal separation of adjacent emitters and for per‑emitter thermal couplings into the spreader. That is precisely the design the '786 describes (LEDs spaced ≥200–300 µm; single densely‑vias line under each emitter; deliberate lateral thermal impedance).
• Motivation: "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." KSR at 417.
• Anticipated rebuttal: applicant will argue that the art teaches spreading heat laterally and away, i.e., that element J's high lateral impedance teaches away. See §5.

Ground 3 — [US 2006/0012986 A1 or EP 0 967 590 A1] in view of [US 7,052,180 B2] in view of [multilayer substrate art].

• Coverage: C + J directly. If the field already measures LED junction temperature as the enabling variable for colour/brightness control ('180: "LED junction temperature tester"), then co‑packaging a detector with the emitters and arranging the substrate so that each emitter's junction temperature is a well‑defined, per‑emitter quantity is an obvious design objective with a finite set of known implementations.
• Framing: this is the "obvious to try" branch — "when there is a design need or market pressure to solve a problem and there are a finite number of identified, predictable solutions, a person of ordinary skill has good reason to pursue the known options." KSR at 421.

Ground 4 — § 103 over the specification's own admissions. The '786's Background repeatedly concedes that the hardware components are known: prior‑art illumination devices already combined multiple colours of LEDs in one package; already used dedicated photodetectors; already measured forward voltages for temperature; already adjusted drive currents. What the '786 frames as novel is the accuracy of the calibration mathematics — which is not claimed. To the extent claim 1 reads on any package combining a detector with an array on a board over a heat sink, the Background itself supplies much of the case.

Likely dependent claims (unverified — see §6) would almost certainly cover: the thermally conductive lines of ~10–20 densely packed vias; the heat‑sink materials (Cu/Al, 200–400 W/(m·K), 1–10 mm, ~3 mm); thickness ranges (first routing 10–20 µm; first dielectric 10–100 µm, εr 3–12; second dielectric 100–1000 µm; substrate 300–500 µm); the optional third routing layer continuous on the heat sink, and the dome geometry. Ranges of this type are classic § 103 targets: where the prior art discloses the materials and the claimed range is a result‑effective variable optimized by routine experimentation, the range is obvious. In re Aller, 220 F.2d 454 (CCPA 1955); In re Boesch, 617 F.2d 272 (CCPA 1980).

5. Counter‑arguments the applicant will raise, and how they fare

1. Teaching away (the lateral‑impedance point). This is the best non‑obviousness argument available. The thermal‑management art universally teaches spreading heat — thick metal bases, wide copper pours, large spreaders. Element J instead deliberately raises lateral thermal impedance. A patentee can argue the prior art pointed the other way. Assessment: partially persuasive, but it is rebutted by the specification's own admission that vertical conduction is what matters and that the lateral impedance is merely a consequence of choosing a thin low‑k dielectric — i.e., a result‑effective variable, not an inventive insight. And the '786 explicitly concedes the downside of the alternative ("increasing the number of thermally conductive lines … may provide worse thermal separation between the emission LEDs"), demonstrating that both directions were known and the choice was a design trade‑off.
2. Secondary considerations. None are evidenced on the record. There is no litigation, no PTAB proceeding, and no licensing/industry‑praise evidence in the retrieved material (consistent with the earlier Litigation summary, which found no case asserting or challenging '786). Without nexus, this factor is neutral.
3. § 112 as the stronger attack (note for strategy). With the claim set unavailable, my read is that the real vulnerability of claim 1 may be § 112 rather than § 103. Element J recites a relative, functional property ("relatively high … relatively low") attached to a layer, whereas the specification's support for that property is expressed for the substrate as a whole and only in a single embodiment ("first dielectric layer 1816 provides a relatively high thermal impedance in the lateral direction …" appears in the related continuation US 12,052,807 — a strong hint that the same relative‑language problem recurs across the family). Written‑description, enablement, and indefiniteness of the relative terms ("relatively high" compared to what?) are worth a full analysis once the claims are in hand.

6. What I could not do, stated plainly

1. Dependent claims. I retrieved only claim 1. I did not retrieve claims 2 — n (or the true claim count). No claim‑by‑claim § 103 chart beyond claim 1 is possible, and I will not invent one.
2. A verified "Patent Citations" list for US10161786B2. I could not render that section. The reference list above is drawn from the citation neighborhoods of the '786 record and from confirmed family members; several entries are marked Medium or Low confidence precisely because I could not confirm they are citations of this patent. The Cited By entries are confirmed but are not prior art.
3. A verified multilayer‑LED‑substrate reference. This is the load‑bearing gap in the prima facie case. It should be closed with a directed CPC search (e.g., H01L 33/64 (LED thermal arrangements), H05K 1/02 (multilayer PCB), H05K 3/00, F21V 29/00) and by pulling the full IDS and the examiner's reasons for allowance from the file wrapper via USPTO Patent Center / Patent Public Search for 14/314,482.
4. Any 2025–2026 litigation or PTAB activity. Consistent with the earlier Litigation summary: nothing found. That remains a negative search result, not proof of absence.
5. Identifier discipline. Per instruction I did not auto‑correct identifiers. Note again that "10161786" also exists as EP application 10161786 (a dental superstructure) — a different identifier in a different system, and not evidence about this US patent.

7. Bottom line

• On the substance I could verify, claim 1 is a packaging claim, and it is a strong § 103 candidate. Every element other than the relative anisotropy of element J is squarely within ordinary skill and within well‑established board‑level art; the co‑packaged detector and the multilayer-with-vias routing are both mid‑2000s technology.
• The motivation limb is unusually well supported, because the '786's own specification frames the multilayer substrate as the routine fix for the single‑layer substrate's known electrical defects — the classic KSR posture.
• The weak point of any challenge is empirical, not conceptual: I could not, from the record I reached, point to a single verified reference disclosing the full four‑layer routing/dielectric/dielectric stack with vertical thermal conduction. Ground 1 is only as strong as that reference.
• The strongest defensive posture for the patentee is not § 103 but § 112 (relative/functional thermal‑impedance language) plus the narrowness of claim 1 — which excludes the very single‑layer‑substrate embodiment the specification discusses at length, meaning the patent's own broadest disclosure is unclaimed.
• Immediate next steps to make this analysis actionable: (i) pull the granted claims and file wrapper for 14/314,482; (ii) obtain the actual IDS and examiner citations to replace the confidence‑graded list in §3; (iii) run a CPC‑directed prior‑art search for multilayer LED substrates with thermal vias predating 2014‑06‑25.