US 9025002

I'll run targeted searches for this specific patent number and any related 2026 CAFC docket activity.

Let me run a couple more targeted searches to check for any litigation or CAFC docket activity tied to this exact number.

Summary — U.S. Patent No. 9,025,002 (US9025002B2)

Source of record: Google Patents full text, https://patents.google.com/patent/[US9025002](/patent/US9025002)/en (fetched 2026-09-27). Google Patents mirrors the USPTO/EPO DOCDB bibliographic data; I did not independently pull the USPTO PatentCenter or PACER/CAFC docket records, so docket-level items below are flagged as unverified.

Bibliographic data

Family status per the record: the EP member (EP2574050) is listed not active / withdrawn, and the PCT is listed ceased; the US case is the one marked Active.

Abstract (as published)

A method and apparatus for playing audio of an attendant at a remote end, and a remote video conference system. The method includes: receiving audio of an attendant at a remote site; and, by means of two or more loudspeakers mounted at a top and a bottom of a remote image presentation device at a local site, simulating an audio transmission path of the audio of the remote attendant between those loudspeakers and an attendant at the local site through a predetermined algorithm. The simulating means the audio transmission path is simulated between the head of the remote attendant's displayed image and the head of the local attendant.

Plain-language overview of the independent claims

The claims as reproduced are drafted in an unusual, somewhat non-standard style (e.g., "directly mounting" recited within a method/apparatus claim, and grammatical artifacts such as "at one or more respective" with no object). That is how the text appears on the record page, and it may reflect the November 2015 certificate of correction. I have not verified the exact corrected claim text against a native USPTO PDF.

Claim 1 — method. Play audio for multiple remote attendants from one or more remote sites. Steps:

1. Receive audio signals from at least two remote attendants at one or more remote sites.
2. Display those remote attendants, at the local site, as corresponding images on a remote image presentation device.
3. For each displayed remote-attendant image, mount at least one loudspeaker pair vertically directly above and below that one image, so each pair projects audio/voice of only one corresponding remote attendant.
4. Simulate, via a predetermined algorithm at the local site, two audio transmission paths: a first path covering the distance from the head of the first remote-attendant image to the head of a local attendant, and a second path covering the distance from the head of the second remote-attendant image to the head of the same local attendant or another local attendant.

Claim 6 — apparatus. An audio acquiring unit (receives audio from at least two remote attendants) plus a sound source simulating unit that performs the same display/mount/simulate-two-paths operation, with the added limitation that the remote attendants' audio signals are played according to corresponding signal strength (i.e., amplitude/distance cueing).

Claim 11 — remote video conference system. A video/audio collecting device having an audio signal encoding unit that selects, encodes, and sends audio signals above a threshold, plus a video/audio playing device having the audio acquiring unit and sound source simulating unit that perform the same mount-above-and-below and simulate-two-transmission-paths operation, playing signals according to signal strength.

Dependent-claim highlights: claims 2 and 7 add position information (horizontal-row relationship) and location information (front/back-row relationship, i.e., vertical direction); claim 4 reserves only above-threshold audio; claim 5/10 apply a "shortest distance to threshold" rule — if the nearest vertically mounted pair is closer than a threshold, play through only that pair, otherwise play through multiple adjacent pairs; claim 12 adds multi-row acquiring/simulating units; claim 13 covers the case where a remote attendant sits between two remote microphones, triggering simulation through two groups of loudspeaker pairs.

Embodiment notes (from the specification)

• Loudspeakers are arranged in two horizontal rows (top and bottom of the display), e.g., 502a–502f and 502a′–502f′, with "vertical loudspeaker pairs" sharing the same x-coordinate; the pair synthesizes the sound at the head position of the displayed remote attendant (VBAP — vector base amplitude panning — is the named example algorithm).
• A threshold filters out non-speech noise (e.g., tapping a microphone, turning a page).
• Multi-row scenarios use the inverse-square law to adjust amplitude so a local participant perceives front/back distance.
• The audio signal encoding unit can use SAOC (Spatial Audio Object Coding) so that sites with different microphone/loudspeaker counts can interoperate; FIG. 16 outlines the SAOC send/receive flow (steps 161–168).

CAFC / litigation check — no results found

I searched for this exact number in connection with Federal Circuit and 2026 docket activity and found no CAFC case, appeal, or IPR/PGR docket tied to US 9,025,002. Web searches for "9025002" ... Federal Circuit, 9025002 patent CAFC 2026 docket appeal, and litigation combinations returned no patent-specific docket hits. I cannot confirm any litigation or appeal involving this patent; treat the absence as "not found in these searches," not as proof none exists. A definitive check would require USPTO PatentCenter/PTAB (PTACTS) and PACER/CAFC docket queries, which returned no direct results here.

False positives to disregard (different subject matter, same digit string):

• A Hill Phoenix HVAC document listing "9025002" as an optional ECM fan-motor part number.
• A British Columbia forestry "Project #: 9025002" Schedule A certificate.
• A Brazilian TRF-3 court document referencing an unrelated ID "9025003."
  These are not the patent and should not be conflated with US 9,025,002.

Relevant forward citation of note: US 9,924,252 B2 (Polycom, Inc., "Loudspeaker arrangement with on-screen voice positioning for telepresence system") cites this family — a closely related follow-on in the same technical space.

Uncertainty statements

• The bibliographic fields and claim text above come from the Google Patents record provided/fetched; I did not independently corroborate each field against the USPTO PatentCenter's native documents.
• A Certificate of Correction (2015-11-03) exists, so the currently enforceable claim wording may differ from the original grant. I have not verified which claims were corrected.
• The "adjusted expiration 2032-02-05" is Google's assumption based on maintenance-fee/term-adjustment data (8th-year maintenance fee paid 2022-10-19); it is not a legal conclusion.

I'll research litigation involving US patent 9025002 using targeted searches.

The initial searches returned unrelated content. Let me search more targeted litigation databases and court records.

Let me search litigation-specific databases and check whether this patent has ever been asserted.

Summary of Findings: Litigation Involving U.S. Patent No. 9,025,002

No litigation involving U.S. Patent No. 9,025,002 was found.

Based on the searches I was able to run across general web sources and patent/litigation-related material, I could not identify any district court action, ITC investigation, PTAB proceeding (IPR/PGR), or Federal Circuit appeal in which U.S. Patent No. 9,025,002 B2 was asserted, challenged, or otherwise at issue.

Patent identification (per the authoritative full text provided)

What the searches did and did not surface

• No case-level litigation records for this specific patent appeared. Search results labeled with "9025002" matched either (a) the subject patent itself (Google Patents, Patentimages PDF, a Huawei inventor leaderboard page), or (b) unrelated items — e.g., an HVAC parts catalog part number "9025002" (Hill Phoenix), a Brazilian administrative/benefit case document "ID 9025003", and an IEEE-style reference. These are not this patent and were not counted.
• On the Google Patents page, the entries under "Families Citing this family" and "Cited by Examiner" are citing/cited patent documents (e.g., US 9,924,252 to Polycom, EP 2,874,411 to Sony, various CN/JP documents). These are prior-art and citation relationships, not litigation. The litigation you asked me to search for (Unified Patents caselist, CAFC, PACER) did not return any associated case.
• No PTAB activity (IPR/PGR/CBM) for US 9,025,002 was located.
• No ITC Section 337 complaint referencing this patent was located.

Context

The patent is a Huawei Device Co., Ltd. portfolio asset in the telepresence/videoconference spatial-audio space (priority 2010, grant 2015). Related family members are CN 102281425 A, EP 2574050 (A1/A4, noted as withdrawn/non-active), and WO 2011/153907 A1. None of these family records, in the material reviewed, referenced any litigation.

Notably, the litigation results that did surface involving Huawei (e.g., Uniloc v. Huawei in E.D. Tex. concerning U.S. 8,571,194 and related patents; VoIP-Pal.com v. Huawei in W.D. Tex.; AIM IP v. Futurewei/Huawei in C.D. Cal. concerning U.S. 5,920,853) involve entirely different patents, not 9,025,002, and were therefore excluded.

Important caveats and limitations

• I was unable to directly query the paywalled/interactive litigation tools you named — the Unified Patents litigation portal (portal.unifiedpatents.com/litigation/caselist), PACER, RPX Insight, and Docket Alarm — within the available research steps. My conclusion is based on open web search results, which surfaced no case for this patent.
• A definitive "no litigation ever" statement requires a direct PACER/RPX/Unified Patents docket-owner search, which I could not complete here. Accordingly, I state with high confidence that no litigation is publicly known or readily discoverable, but I cannot rule out a non-indexed or very recent filing.
• I did not find any assignment to a patent-assertion entity (NPE) or any record of assertion. While the current assignee listing shows Huawei Device Co., Ltd., the file-history assignments show movement between Huawei Device (Shenzhen) Co., Ltd. and Huawei Device Co., Ltd. (2018), which are intra-Huawei renamings — not an NPE transfer.

Bottom line: On the record I was able to review, U.S. Patent No. 9,025,002 appears to be a portfolio/defensive patent that has not been litigated. If you need certainty, the next step would be a direct docket search on PACER (all district courts) and the Unified Patents litigation caselist filtered to this patent number.

I'll verify the "no proceedings" default against live sources before writing.

No hits yet. Let me run a few more targeted checks, including litigation and Unified Patents angles.

Let me do final diligence checks on CourtListener/docket sources and any Huawei-v-telepresence IPR activity.

Proceedings overview

Zero AIA trial proceedings are on file against US 9,025,002. The structured "PTAB proceedings on file" block — sourced from the USPTO Open Data Portal — returns no IPR, PGR, or CBM for this patent, and my live web verification surfaced no PTAB docket entry, institution decision, Final Written Decision, or Federal Circuit appeal from a PTAB case involving this patent. The breakdown is therefore active: 0 / claims invalidated: 0 / claims sustained: 0 / settled: 0 / institution denied: 0. The bottom-line defensive posture: the patent is completely untested at the PTAB and stands on all 13 issued claims. This is not the "claims 1-5 have been canceled" scenario — a defendant cannot piggyback on an existing record, and no challenger has yet bought the Patent Owner a free claim-construction or validity ruling. It is equally not a "hardened by two IPR wins" scenario — there is no PTAB precedent whatsoever to lean on or to fear.

What I verified and what I did not. My web searches returned no relevant PTAB material; results were dominated by false positives on the string "9025002" (a Tyler/Hill Phoenix refrigeration ECM fan-motor part number, a Brazilian INSS lawsuit number, a LexisNexis entity ID). One apparent ptacts.uspto.gov hit was an exhibit in an unrelated Huawei patent dispute (BlackBerry/Fundamental Innovation USB-charging patents, e.g., U.S. Pat. Nos. 8,208,569 / 8,102,833 / 8,437,293), not this patent. My run of tool calls was truncated by a step limit, so I cannot represent that I exhaustively searched every litigation docket or CourtListener — I found no assertion of US 9,025,002 in the litigation material I retrieved, but that is a negative finding from a limited search, not an established fact.

No proceedings to enumerate

Because the canonical list is empty, the per-proceeding template has nothing to populate. Rather than manufacture proceeding numbers or infer outcomes, here is what is affirmatively true:

Verdicts at claim level: none. No claim of US 9,025,002 has been canceled, confirmed, or held unpatentable by the PTAB, because no petition has ever been instituted. Claims 1–13 are all UNTESTED. There is no FWD to link to, no institution decision to quote, and no disposition to characterize — any statement to the contrary would be fabrication.

Strategic summary

Canceled vs. sustained vs. untested. The entire claim set — independent claims 1, 6, and 11 and dependents 2–5, 7–10, 12, 13 — is untested. There is no narrowed, IPR-surviving claim set to point to, and no dead claim to attack a demand letter with. Practically, this means the full original scope of the patent is live, including the broadest independent claims (claim 1's method of simulating first and second audio transmission paths to a local attendant's head via vertically mounted loudspeaker pairs; claim 6's apparatus counterpart; claim 11's remote video conference system). A defendant cannot say "the only asserted claims are already canceled," nor can it say "the Patent Owner already survived — expect a tough fight," because neither happened.

Estoppel landscape. There is no § 315(e)(2) estoppel against anyone on this patent — estoppel attaches only to a petitioner that obtained an FWD, and there has been none. For a defendant being asserted against today, that cuts both ways: (a) every prior-art ground is still fully available in an IPR/PGR — nothing has been "reasonably could have raised" and foreclosed; but (b) there is no prior petitioner's work product, no instituted ground, and no PTAB claim construction to borrow. You would be building from a blank slate. Note also that the absence of any prior challenge means the § 315(b) one-year bar and § 325(d) discretionary-denial dynamics are unencumbered — no prior IPR means no "same or substantially the same art previously presented" argument against you under § 325(d). That is a meaningful procedural advantage for a first filer.

Pattern signals. No petitioner has filed even once, so there is no serial-filer pattern; there is no defensive aggregator (Unified Patents or similar) in the chain that I could find; and there is no PTAB appeal history because there is no PTAB case. The Patent Owner here is Huawei Device Co., Ltd. — a large operating company, not an NPE — and the family data shows the international cousins fared differently from the US case: the structured family table lists WO2011153907A1 as "not_active – Ceased" and EP2574050A4 as "not_active – Withdrawn." Those are foreign-prosecution outcomes, not US validity holdings, but they are worth noting if you are mapping where this family has real teeth. Two practical observations: the last recorded maintenance-fee event is the 8th-year payment (2022-10-19), and the 12-year maintenance fee for a patent granted 2015-05-05 falls due on/about 2026-11-05 with a six-month grace period to about 2027-05-05 — i.e., within weeks of today (2026-09-27). A lapse would open the entire patent to public-domain practice; that should be diarized. (This due date is derived from the grant date in the record, not from a USPTO fee-status feed, so verify it before relying on it.)

Recommended next steps

1. Treat this as a clean-slate challenge, not a follow-on. There is no FWD to cite and no canceled claim to invoke. If your invalidity theory is strong, you would be the first petitioner — which means no § 325(d) bar from prior art already before the Office and no prior-construction baggage. Confirm on USPTO PTAB E2E (https://ptab.uspto.gov) under the application number 13/711,239 and patent number 9,025,002 immediately before filing anything, since ODP ingestion can lag; if any recently-filed petition appears, re-run this analysis before committing to a strategy.

2. Do not over-claim from my search. I could not complete an exhaustive litigation sweep due to tool limits. Independently confirm via PACER/Docket Alarm/CourtListener whether US 9,025,002 has ever been asserted, and whether Huawei has used it defensively or offensively. If Huawei has never asserted it, the more likely scenario is a defensive/portfolio patent — which lowers your exposure but also means no § 315(b) clock is running against you yet.

3. If you are a defendant who has already been served, the § 315(b) one-year bar runs from service. With no co-pending IPR, you are free to file a first IPR on the strongest § 102/§ 103 art. Grounds to consider against the vertical-loudspeaker-pair head-positioning concept include the prior art already on the face of the patent — Polycom's EP1763241A2 ("Spatially correlated audio in multipoint videoconferencing"), US20070263079A1 (Graham, "location specific sound in a telepresence system"), Yamaha's US20080285771A1/CN101268715A, and the patent's own Huawei-family reference CN101534413A ("System, method and apparatus for remote representation," US20120033030A1). Note: those are the 19 references already cited on the face of the patent, so a § 325(d) discretionary-denial risk exists for them even absent a prior IPR — plan to lead with non-cumulative art (e.g., SAOC/VBAP-era spatial audio references or telepresence layout art not before the examiner).

4. Track the fee window. The near-term 12-year maintenance fee (due on/about 2026-11-05, grace to about 2027-05-05) is a cheap, high-leverage thing to monitor via USPTO Patent Center. If it lapses uncorrected, the patent expires and the dispute ends.

5. Do not represent to a court or a client that any claim of this patent has been invalidated. It has not. Equally, do not represent that the patent has "survived" PTAB scrutiny — it has never faced it.

Sources: USPTO ODP "PTAB proceedings on file" block (canonical, showing zero AIA trials); Google Patents US9025002B2 (https://patents.google.com/patent/US9025002/en) for the full text, claims, family status, and legal events; PTAB E2E (https://ptab.uspto.gov) for direct docket verification. No PTAB opinion or CAFC opinion involving US 9,025,002 exists to link to.

I'll verify the assignment record details and check for any litigation or correspondent-of-record data before assembling the analysis.

Ownership & Assignment Analysis — US 9025002 B2

Patent: Method and apparatus for playing audio of attendant at remote end and remote video conference system
App. No. 13/711,239 · Filed 2012-12-11 · Issued 2015-05-05 · Priority 2010-06-11 (CN 201010205022.3)
Family: PCT/CN2011/074835 (WO2011153907A1) · EP2574050A1/A4 · CN102281425A

Sourcing note: The Reel/Frame numbers, conveyance types, parties, and dates below are drawn from the USPTO records as surfaced in the Google Patents legal-events feed for this patent. The correspondent of record is not exposed in that feed, and I could not retrieve the correspondent names from the Assignment Center or any secondary source in this session. I therefore do not report correspondent names rather than guess. Where I flag a "repeat correspondent" signal, it is a reel-level finding (the same reel/frame covers many Huawei patents), which is a distinct and verifiable observation.

Inventors

Employer determination: The CN priority application CN201010205022.3 names 华为终端有限公司 (Huawei Device Co., Ltd.) as applicant of record, with a Shenzhen Longgang address (坂田华为基地B区2号楼). Both inventors assigned their rights to Huawei Device Co., Ltd. by the instrument recorded at reel 029448/0387 on 2012-12-11 — i.e., they were assigning to the company that was already their filing-time employer, not to a third party.

Unusual-pattern check — no finding. The "all inventors depart within 12 months of filing, then a fire-sale follows" pattern is not present here:

• Wuzhou Zhan is credited with 23 granted US patents listed under Huawei (patentleaderboard.com profile), indicating continued Huawei employment well beyond the 2010 filing — not a 12-month departure.
• No post-2013 inventor-side assignment, quitclaim, or re-recording appears anywhere in the chain. The only two assignors in the entire record are the two inventors, and they appear exactly once, at reel 029448/0387.
• I could not independently verify Dongqi Wang's tenure; treat that as unverified rather than negative.

Original assignee

Huawei Device Co., Ltd. (华为终端有限公司) — the entity named on the issued patent and the assignee of record for the 2012-12-10 inventor assignment.

• Primary line of business: Wholly-owned subsidiary of Huawei Technologies / Huawei Investment & Holding Co., Ltd., holding Huawei's consumer device and enterprise endpoint business (phones, tablets, wearables, and collaboration endpoints).
• Product embodiment: Huawei marketed the TP-series Telepresence room systems and, more recently, IdeaHub / CloudLink conferencing endpoints, which use loudspeaker arrays mounted adjacent to (above/below) the display — the physical configuration recited in claim 1. This is an inference of embodiment from product architecture, not a verified claim-by-claim mapping.
• Current status: Operating. The CN counterpart (CN102281425A) lists the current rightsholder as 华为终端有限公司 with unified social credit code 914419000585344943 (Dongguan-registered legal person, wholly foreign-invested). Huawei remains one of the world's largest patent filers and was added to the U.S. Entity List in 2019; it is not in bankruptcy, not dissolved, and has not been acquired.

Assignment timeline

Three recorded events. All are internal to the Huawei corporate group.

• 2012-12-10 (executed) / recorded 2012-12-11 — Reel 029448/0387

  • Conveyance: Assignment (ASSIGNMENT OF ASSIGNORS INTEREST)
  • Assignor: ZHAN, WUZHOU; WANG, DONGQI (individual inventors, jointly)
  • Assignee: HUAWEI DEVICE CO., LTD. (China)
  • Correspondent: Not exposed in the available record; not verified. (For context only, and it is not the USPTO assignment correspondent: the CN prosecution agent of record on the priority application was 北京凯特来知识产权代理有限公司 / Beijing Kaitelai IP Agency, agents 郑立明 and 焦丽 — a CN filing fact, not a US recording fact.)
  • Context: Standard original inventor-to-employer assignment, executed the day before the US continuation was filed — this is the root of title, not an acquisition.

• 2018-05-18 (executed) / recorded 2018-06-12 — Reel 046340/0590

  • Conveyance: Change of Name
  • Assignor: HUAWEI DEVICE CO., LTD.
  • Assignee: HUAWEI DEVICE (SHENZHEN) CO., LTD.
  • Correspondent: Not exposed in the available record; not verified. Repeat-filing flag (reel-level): the identical reel/frame 046340/0590 appears in the USPTO legal events of numerous other Huawei Device US patents (e.g., US10078434, US10044672), confirming this was a single bulk recordation covering a large portfolio, not a patent-specific transaction.
  • Context: Change of name only — an internal corporate renaming. No change in ultimate beneficial owner.

• 2018-11-19 (executed) / recorded 2018-11-19 — Reel 047603/0039

  • Conveyance: Assignment
  • Assignor: HUAWEI DEVICE (SHENZHEN) CO., LTD.
  • Assignee: HUAWEI DEVICE CO., LTD.
  • Correspondent: Not exposed in the available record; not verified. Same bulk-recordation character as reel 046340/0590 — the frame is shared across the Huawei Device portfolio.
  • Context: Internal reorganization / change-of-name unwind — the naming reverted to Huawei Device Co., Ltd., six months after the 2018-06-12 name change. Net effect on beneficial ownership: zero.

Non-assignment legal events (for completeness, not part of the chain of title):

• 2015-04-15 — STCF, information on status: patent grant
• 2015-11-03 — CC, Certificate of Correction (issued ~6 months post-grant; the as-published claim text shows drafting artifacts such as "at one or more respective;" — consistent with a post-grant correction, though I have not retrieved the correction document itself)
• 2018-10-25 — Maintenance fee, 4th year paid
• 2022-10-19 — Maintenance fee, 8th year paid
• Legal status: Active, adjusted expiration 2032-02-05

If the Assignment Center shows additional filings not reflected above, they would be post-2018-11-19 events; nothing in the Google Patents legal-events feed indicates any.

Timeline diagram

timeline
    title Ownership of US 9025002
    2010 : Priority CN application filed
    2011 : PCT application filed
    2012 : US continuation filed
         : Inventors assign to Huawei Device
    2015 : Patent issued
         : Certificate of correction recorded
    2018 : Name change to Huawei Device Shenzhen
         : Assigned back to Huawei Device Co Ltd
    2022 : 8th year maintenance fee paid

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The only two transferees in the chain are Huawei Device (Shenzhen) Co., Ltd. and Huawei Device Co., Ltd. — subsidiary operating entities of a publicly known industrial group, not licensing-only LLCs. No "IP / Patents / Licensing / Holdings / Ventures" suffix appears anywhere (reels 029448/0387, 046340/0590, 047603/0039). No registered-agent service address is used; the recorded CN address is Huawei's own Longgang/Dongguan facility.

2. Known asserter in the chain — not present. No assignee in this chain matches Acacia, Marathon, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, or any Spangenberg entity. The chain begins and ends at Huawei Device Co., Ltd.

3. Repeat correspondent across the chain — unclear / not determinable. The USPTO Assignment Center exposes a correspondent for each reel/frame, but that field is not present in the data available to me, and I could not obtain it from any secondary source. What I can substantiate is reel-level recurrence: a single recorded instrument (046340/0590) covers the Huawei Device portfolio, which is normal bulk practice for a corporate name change and not an NPE tell. I am explicitly declining to name a correspondent rather than fabricate one. If you have Assignment Center access, pull the correspondent on reels 029448/0387, 046340/0590, and 047603/0039 to close this gap.

4. Cascading transfers — not present. Only two post-issuance transfers exist, both in 2018, both reversible halves of one renaming event, both via bulk portfolio-wide reels, and both between Huawei-family entities. This is the opposite of the LLC-chain pattern, where the assignee names change while the correspondent stays fixed. Total elapsed time from inventor assignment to current state: ~6 years with zero third-party conveyance.

5. Pre-litigation transfer — not present. No infringement suit naming US 9025002 was located in the searches conducted, so the trigger condition (assignment within 6 months of a first suit) cannot be met. The last transfer (reel 047603/0039) is dated 2018-11-19 and the patent has remained with Huawei Device Co., Ltd. since.

6. Bankruptcy fire-sale — not present. Neither Huawei Device Co., Ltd. nor Huawei Device (Shenzhen) Co., Ltd. has filed Chapter 7/11, and there is no trustee's sale, court-ordered transfer, or "recipient via court proceeding" conveyance in the record. The four maintenance-fee events (including the 8th-year payment on 2022-10-19) confirm the owner has been paying to maintain the patent — behavior inconsistent with a distressed asset.

7. Privateering — not present. No transfer to an assertion vehicle, and no SEC-filed or Patent Progress/EFF-reported arrangement in which Huawei placed patents with an NPE to assert against competitors. (Huawei does litigate directly — e.g., its own SEP suits — but that is operating-company assertion, not privateering.)

8. Defensive aggregator — not present. The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. The patent has not been neutralized; it remains in the operating company's hands.

Verdict

Operating-company assertion — with one caveat stated plainly.

Justification: every link in the chain is intra-Huawei. The root instrument is the inventors→Huawei Device Co., Ltd. assignment at reel 029448/0387 (executed 2012-12-10, recorded 2012-12-11), followed by a pure change-of-name at reel 046340/0590 (executed 2018-05-18) and an internal reorganization back to Huawei Device Co., Ltd. at reel 047603/0039 (recorded 2018-11-19). The current assignee is a large operating manufacturer that markets conferencing endpoints using the top/bottom loudspeaker-array architecture recited in claim 1, and it has paid maintenance fees through the 8th year (2022-10-19) with the patent active to 2032-02-05. No assignee in the chain appears on any public NPE list, and signals 1, 4, 5, 6, 7, and 8 are each affirmatively absent from the record.

Caveat on the label: this taxonomy's "Operating-company assertion" option also contemplates active assertion against competitors, and I found no litigation on US 9025002, so the assertion prong is unverified for this specific patent. The ownership prong is not in doubt. If you require a strict reading, the correct characterization is "operating company retains ownership; no NPE linkage; assertion status unknown." The single genuine data gap is the correspondent of record, which is not exposed in the sources I could reach and which I have not guessed at.

Verify at: https://assignmentcenter.uspto.gov/ (search by patent number 9025002 or app. 13/711,239) · mirror index: https://assignment.uspto.gov/patent/index.html · source record: https://patents.google.com/patent/US9025002/en

I'll start by verifying the patent record and then research each cited reference.

Now let me research the remaining key cited references.

Prior-Art Analysis — US 9,025,002 B2

A. Record verification

Searching for the number 9025002 returns exactly one patent, matching the authoritative full text supplied:

Sources reviewed: https://patents.google.com/patent/US9025002/en, https://www.freepatentsonline.com/y2013/0100236.html, https://patents.justia.com/patent/9025002, https://patents.google.com/patent/WO2011153907A1. These are USPTO-derived mirrors; I did not retrieve the PatentCenter prosecution wrapper (fee/paywall and step limits), so the §102-vs-§103 characterizations below are my analytical mappings of the references on their face, not a report of the examiner's actual rejection grounds.

One prosecution note: a Certificate of Correction issued 2015-11-03, and the claim set as published is grammatically irregular (e.g., "A method for playing audio of a plurality of a respective remote attendants…"). The claim text I analyze is the granted/corrected text as it appears on Google Patents and Justia.

B. What the claims actually require (the "anticipation template")

All 13 claims trace to three independent claims. The elements that must be found in a single reference for §102, or combined for §103:

Claim 1 (method) — M1 receive audio from ≥2 remote attendants; M2 display them as ≥2 images on a remote image presentation device at the local site; M3 for each image, directly mount ≥1 pair of loudspeakers vertically above and below that image; M4 the pair projects audio corresponding to only one respective remote attendant; M5 simulate, by a predetermined algorithm, first and second audio transmission paths from each displayed remote head to the head of the local attendant.

Claim 11 (system) — video/audio collecting device with an audio-signal encoding unit that selects, encodes and sends only audio above a threshold, plus a playing device with audio-acquiring and sound-source-simulating units performing M1–M5.

Dependent highlights: cl. 2/3 (horizontal-row "position information" + vertical "location information" carried with the audio), cl. 4/9 (threshold filtering), cl. 5/10 (if the shortest distance from image to loudspeaker < threshold, use only that pair; otherwise use multiple adjacent pairs), cl. 12 (multi-row units), cl. 13 (if a remote attendant sits between two remote microphones, simulate the audio in two corresponding loudspeaker pairs).

The distinguishing core is therefore: (i) the vertical top/bottom loudspeaker-pair topology keyed to an individual imaged head, (ii) one pair ↔ one attendant exclusivity, and (iii) loudspeaker-pair selection as a function of distance between the imaged head and the pair.

C. Prior-art references cited in US 9,025,002 — one by one

All 19 patent citations pre-date the 2010-06-11 priority date. Note: for the 2012-12-11 US filing (pre-AIA), publications of earlier-filed US applications also qualify as prior art under pre-AIA §102(e) as of their US filing date. Google Patents marks only four of these with the examiner-citation asterisk (US 2006/0244817, US 2008/0285771, US 2010/0098258, US 2010/0119092); the remainder appear as cited references without the asterisk. Treat that marker as indicative, not definitive.

TIER 1 — Most relevant (strong §102 and/or §102(e) candidates)

1. US 2007/0263079 A1 (Graham, Philip R.) — "System and method for providing location specific sound in a telepresence system"

• Priority 2006-04-20; published 2007-11-15; Cisco/assignee; granted as US 7,692,680 B2 (2010-04-06). Also WO 2007/123946 A3. URLs: https://patents.google.com/patent/US20070263079A1/en, https://www.freepatentsonline.com/9338394.html.
• Disclosure: a plurality of remote microphones, each associated with a respective area and generating a sound signal from the voice of user(s) in that area; a plurality of remote cameras each aligned with one microphone; a plurality of local displays each reproducing one area's image; and a plurality of local loudspeakers, each positioned proximate to a respective local display and reproducing only that area's sound. Loudspeakers are positioned below the display in some embodiments, above in others, or on the sides (at least one on each side). Advantage stated: the sound appears to come from the display showing the speaker, so local users can identify who is speaking.
• Potential §102 vs. claims: This is the closest single-reference match to M1+M2+M3+M4 of claim 1 — each display/area has its own loudspeaker reproducing only that area's user, and the loudspeaker sits directly at (above/below/side) the display. If the Graham display is treated as the "remote attendant image" and the above/below positions as the "pair vertically above and below," claim 1 is arguably anticipated; even if not literal anticipation, Graham is the primary §103 reference against claim 1. It is weaker on M5 (no explicit head-to-head transmission-path simulation) and silent on the threshold logic of claims 4/11 and the distance-based pair selection of claim 5.

2. EP 1 763 241 A2 (Potekhin, Knaz, Shani) — "Spatially correlated audio in multipoint videoconferencing" (Polycom)

• Priority 2005-09-07; published 2007-03-14; US counterpart US 2007/0064094 A1 (2007-03-22), granted US 7,612,793 B2 (2009-11-03). URLs: https://patents.google.com/patent/EP1763241A2/en, https://www.freepatentsonline.com/7612793.html.
• Disclosure: each of a plurality of audio streams is provided to an endpoint corresponding to one of a plurality of loudspeakers; streams are differentiated (amplitude and/or delay) to emphasize the loudspeaker(s) closest to the position of the speaking endpoint in the displayed layout. Critically, for an endpoint with four loudspeakers, one at each corner of the display, the MCU decides whether to use the top, bottom, or both: if image height Hi > H/2, the top loudspeaker is used and the bottom gain is set to zero; if Hi < H/2, the bottom is used and the top gain is zeroed; if Hi = H/2, both are used with equal gain. Parameters Di (delay) and Mi (gain) are keyed to the image's Xi:Yi position and updated dynamically as the layout changes. It expressly mentions "head related transfer function" processing.
• Potential §102 vs. claims: This reference directly teaches vertical (top/bottom) loudspeaker selection driven by the imaged participant's vertical position, i.e., the inventive concept underlying claims 2, 3, 5 and 13:
  • Claim 2 — position/location information used to differentiate a horizontal-row and a vertical/front-back relationship: Polycom's Xi:Yi layout coordinates map onto this.
  • Claim 5 / 10 — playing through the closest loudspeaker pair, and through more than one pair when appropriate: Polycom's "one or more loudspeakers closest to the position of the speaking endpoint," with the four-speaker top/bottom/both decision, is a close if not identical teaching.
  • Claim 1 — anticipated only if the corner-loudspeaker arrangement is read as a "pair vertically above and below" the image; the pair-projects-only-one-attendant limitation is met in Polycom only in a "differentiation/emphasis" sense (a single loudspeaker channel can mix multiple conferees), so it is a strong §103 reference against claim 1 and a strong §102 reference against claims 5 and 13.
  • Also relevant to claim 11 (its MCU-based audio-stream architecture mirrors the collecting/playing device split).

3. US 2010/0119092 A1 (Kim, Jung-Ho) — "Positioning and reproducing screen sound source with high resolution" (Samsung)

• Priority 2008-11-11; published 2010-05-13; granted as US 9,036,842 B2 (2015-05-19); EP counterpart EP 2 187 658 B1. URLs: https://patents.google.com/patent/US20100119092, https://www.freepatentsonline.com/9036842.html.
• Disclosure: a virtual screen sound source is spatially synchronized with a visual object displayed at a specific position on the screen; the apparatus (a) determines the virtual sound-source position, (b) selects a plurality of loudspeaker sets — each a virtual polygon of ≥3 loudspeakers installed at the periphery of the display and containing the object position — and (c) generates individual sound sources per set, overlaps them into a multi-sound source, and outputs through the selected sets' loudspeakers. Selection is by smallest maximum/sum/average angle between the sound-source reference vector and the loudspeaker vectors, or smallest polygon area.
• Potential §102 vs. claims: Directly relevant to the claim 5/10 "multiple loudspeaker pairs with the shortest distances from the image" limitation (its loudspeaker-set selection is precisely a closest-set selection around the on-screen object) and to claim 1's requirement of loudspeakers mounted at the periphery above and below the imaged object. Its polygons necessarily include loudspeakers above and below the object on the screen. Strong §102/§103 candidate for claim 5; §103 candidate for claim 1. Silent on thresholding (claim 4) and on two-microphone scenarios (claim 13).

4. US 2006/0244817 A1 (Harville, Michael) — "Method and system for videoconferencing between parties at N sites"

• Priority 2005-04-29; published 2006-11-02 (HP); granted as US 7,528,860 B2. URL: https://patents.google.com/patent/US20060244817A1.
• Disclosure: N-party/N-site conferencing with a virtual space arrangement; remote parties displayed on a non-planar display in positions directionally and scale-consistent with the virtual arrangement; an optional "audio spatializer" renders audio received from the N−1 remote sites in a spatially consistent manner with the virtual space arrangement, so the audio heard by the local party "seems to emanate from the respective directions of the remote parties."
• Potential §102 vs. claims: Bears on M5 of claim 1 and on claim 2/3 (position-consistent rendering of remote audio), but it uses generic spatialized rendering rather than a top/bottom vertical loudspeaker pair keyed to an imaged head, and has no threshold or closest-pair logic. Best characterized as a §103 secondary reference, not a standalone §102 reference.

TIER 2 — Relevant, but generally §103/secondary

5. US 5,548,346 A (Hitachi, Ltd.) — "Apparatus for integrally controlling audio and video signals in real time and multi-site communication control method." Priority 1993-11-05; published 1996-08-20. Very early integrated A/V multi-site control art; generic to multi-site conference audio/video control. Title-level assessment only: background/§103 reference; too generic to anticipate any claim, particularly the top/bottom pair topology. (I did not open the specification — treat this mapping as preliminary.)

6. CN 1 498 035 A / US 2004/0125241 A1 (Ogata, Satoshi) — "Audio information conversion method, program and device." Priority 2002-10-23; CN published 2004-05-19; US published 2004-07-01. This family is the classic virtual-sound-source/HRTF audio-conversion art, i.e., a candidate for the "predetermined algorithm" in claims 1/5/6/8/10 (simulating a transmission path). Preliminary (§103 algorithm reference) — I did not open the specification, so I cannot tie it to a specific claim element with confidence.

7. US 2008/0285771 A1 (Yamaha Corp.) and its CN counterpart CN 101 268 715 A — "Teleconferencing Apparatus / Teleconference device." Priority 2005-11-02; US published 2008-11-20; CN published 2008-09-17. Yamaha sound-image-localization teleconferencing. Relevant to claim 5 (speaker selection to place a talker's sound at a screen position). Preliminary.

8. CN 198 4310 A (TCL) / US 2007/0182865 A1 (Lomba, Vincent) — "Method and communication apparatus for reproducing a moving picture, and use in a videoconference system." Priority 2005-11-08; CN published 2007-06-20; US published 2007-08-09. Videoconference moving-picture reproduction with associated audio; secondary relevance to claims 1/11 architecture. Preliminary.

9. JP 2007-274061 A (Yamaha Corp.) — "Sound image localizer and AV system." Priority 2006-03-30; published 2007-10-18. Sound-image localization for AV; relevant to the "predetermined algorithm" simulating a source at a display position (claims 1, 5, 10). Preliminary.

10. CN 101 682 810 A and US 2010/0165071 A1 (Yamaha) — "Video conference device." Priority 2007-05-16; CN published 2010-03-24; US published 2010-07-01. Same theme as item 7; secondary. Preliminary.

11. CN 101 690 149 A / US 2010/0215164 A1 (Sandgren, Patrik; Ericsson) — "Methods and arrangements for group sound telecommunication." Priority 2007-05-22; CN published 2010-03-31; US published 2010-08-26. Multichannel/"group sound" telecommunication with spatial placement of talkers — relevant to claims 1, 2, 5 (spatial rendering per participant). Note the US publication (2010-08-26) is after the 2010-06-11 CN priority but its §102(e) US filing date (2007-05-22) still makes it prior art. Preliminary.

12. US 2010/0098258 A1 (Thorn, Karl Ola) — "System and method for generating multichannel audio with a portable electronic device." Priority 2008-10-22; published 2010-04-22. Multichannel audio generation; peripheral to the telepresence claims — §103 tertiary reference at most.

13. CN 101 534 413 A (Shenzhen Huawei Communication Technologies) / US 2012/0033030 A1 (Liu, Yuan) — "System, method and apparatus for remote representation / Remote presenting system, device, and method." Priority 2009-04-14; CN published 2009-09-16; US published 2012-02-09. Same-assignee (Huawei) prior art in the identical telepresence field, describing a remote-presentation system with camera/display/loudspeaker/microphone site layout. Given the shared assignee and subject matter, this is the reference most likely to have been central in prosecution for the system/apparatus claims (claims 6–12). Because the US publication post-dates the priority date, its prior-art effect runs through its earlier CN/PCT filing date; the CN publication (2009-09-16) is cleanly prior art. Preliminary mapping — I did not open the specification.

Non-patent citations (4)

• International Search Report, PCT/CN2011/074835, mailed 2011-09-08.
• Written Opinion of the ISA, PCT/CN2011/074835, mailed 2011-09-08.
• Chinese Office Action, CN 201010205022.3, mailed 2012-08-31.
• Chinese Office Action, CN 201010205022.3, mailed 2013-05-10 (16 pages).

These are prosecution documents, not §102 art in themselves, but the two CN Office Actions would identify the references actually applied against the Chinese parent — the most direct evidence of the examiner's real §102/§103 positions. I was unable to retrieve their text within this session.

D. Bottom line: most relevant prior art

1. US 2007/0263079 A1 (Graham) / US 7,692,680 B2 — the best single-reference match to claim 1 (per-display loudspeaker reproducing only the corresponding area's user, mounted at the display; above/below/side variants).
2. EP 1 763 241 A2 / US 7,612,793 B2 (Polycom) — the best match to the vertical aspect and to claims 2, 3, 5, 10, 13 (top-vs-bottom loudspeaker gain decision from the image's vertical position; closest-loudspeaker selection; layout-position-driven audio differentiation).
3. US 2010/0119092 A1 (Kim/Samsung) / US 9,036,842 B2 — best match to claim 5 (selecting the multiple loudspeaker sets nearest the on-screen object) and supportive of claim 1's above/below mounting.
4. US 2006/0244817 A1 (Harville) / US 7,528,860 B2 — supports M5 / claims 2–3 (spatially consistent rendering of remote audio in a virtual arrangement).
5. CN 101 534 413 A / US 2012/0033030 A1 (Huawei/Liu) — same-field, same-assignee system art most relevant to claims 6–12.

Claim-by-claim §102 outlook (analytical, not an examiner record): claims 5, 10, 13 are the most exposed to single-reference anticipation (Polycom and/or Kim); claim 1 is most likely to be attacked as a §103 combination of Graham + Polycom or Graham + Kim; claims 4, 9, 11 (threshold encoding/filtering) have no clean single-reference §102 hit in the cited set and would rest on §103.

E. Explicit caveats

• I confirmed the record and claim text from USPTO-derived mirrors (Google Patents, Justia, FPO). I did not access the USPTO PatentCenter prosecution wrapper (actual examiner rejections, cited-reference designations) within the available research steps, so the assignment of each reference to §102 versus §103 is my own claim-chart analysis, not a quotation of the Office.
• For references I could only identify at title/date/assignee level (Hitachi US 5,548,346; Ogata US 2004/0125241; Yamaha US 2008/0285771, CN 101 268 715, JP 2007-274061, CN 101 682 810, US 2010/0165071; TCL/Lomba CN 198 4310 / US 2007/0182865; Ericsson/Sandgren CN 101 690 149 / US 2010/0215164; Thorn US 2010/0098258; Huawei/Liu CN 101 534 413 / US 2012/0033030), the claim mappings above are preliminary and based on the citation metadata, and should be confirmed by reading each specification before relying on them.
• Patent numbers, publication numbers and dates are reproduced literally as they appear in the record; no auto-correction has been applied.

I'll research the key prior art references cited on this patent's page to ground the obviousness analysis.

Obviousness Analysis — US 9,025,002 B2 under 35 U.S.C. § 103

Patent: US 9,025,002 B2 — "Method and apparatus for playing audio of attendant at remote end and remote video conference system"
Inventors: Wuzhou Zhan; Dongqi Wang | Assignee: Huawei Device Co., Ltd. (now Huawei Device Co., Ltd.)
Priority: CN 201010205022.3, filed 2010‑06‑11 | PCT filed 2011‑05‑30 | US filed 2012‑12‑11 (continuation) | Granted 2015‑05‑05
Effective filing date for § 103 purposes: 2010‑06‑11 (pre‑AIA § 103 applies, since the effective filing date precedes 2013‑03‑16)

Note on rules: All reference identifiers are reproduced exactly as they appear on the patent page. I do not correct or normalize any number. Where I rely on the content of a cited reference, I quote it and give the source URL.

1. Legal framework

Pre‑AIA § 103 asks whether the differences between the claimed subject matter and the prior art are such that the subject matter as a whole would have been obvious to a person having ordinary skill in the art (POSITA) at the time of the invention. The controlling factors are the Graham v. John Deere factors — scope/content of the prior art, differences, level of ordinary skill, and secondary considerations — applied through the KSR Int'l v. Teleflex lens (predictable results, "obvious to try," known design incentives, and market/design pressures in the same field of endeavor).

POSITA here: a video‑conferencing/telepresence audio engineer familiar with microphone arrays, loudspeaker layouts and spatial‑audio rendering (e.g., vector‑base amplitude panning / VBAP), and with the H.323/SIP videoconference architectures of the mid‑2000s.

The claimed invention in miniature. The patent addresses the known problem that in telepresence a remote attendant's voice is not co‑located with his/her displayed image — producing a perceived horizontal and, most acutely, vertical mismatch (Specification ¶ discussing FIG. 4, "path 401" vs. "path 402"). Its fix is to mount loudspeakers above and below the remote image presentation device as vertical loudspeaker pairs and to simulate the audio transmission path from the image's head to the local attendant's head through a "predetermined algorithm" so the sound appears to emanate from the image.

2. Claim 1 — element breakdown

Claim 1 (method) requires:

Claim 1 is a method claim whose novelty must therefore reside in the combination of the above/below-per-image loudspeaker geometry (1c) with the head‑to‑head path‑simulation algorithm (1d). As shown below, each of these two elements, and their combination, is taught or suggested in the cited art.

3. The primary prior‑art references

R1 — US 2007/0263079 A1 (Graham, "System and method for providing location specific sound in a telepresence system"; Polycom; pub. 2007‑11‑15; granted as US 7,692,680)

URL: https://patents.google.com/patent/US20070263079A1/en

Graham discloses precisely the telepresence receiving architecture of elements 1a–1c:

• a plurality of remote microphones, each associated with a respective area and generating a sound signal from the voice of at least one user in that area;
• a plurality of remote cameras, each aligned to image its associated area;
• a plurality of local displays, each reproducing the image of a respective area; and
• a plurality of local loudspeakers, each positioned proximate to a respective local display and reproducing the sound from that area.

Critically for element 1c, Graham expressly teaches the above/below mounting:

"the plurality of local loudspeakers may be positioned below the proximate respective local display. In particular embodiments the plurality of local loudspeakers may be positioned above the proximate respective local display. In some embodiments the plurality of local loudspeakers may be positioned on a side … such that each local display has at least one local loudspeaker on each side."

Graham's stated motivation is the same problem the patent targets — letting a local user identify who is speaking by the location of the sound: "reproducing sound coming from a particular location via a loudspeaker located proximate to a display displaying the area where the sound came from."

R2 — EP 1 763 241 A2 (Polycom, "Spatially correlated audio in multipoint videoconferencing"; pub. 2007‑03‑14; US counterpart US 2007/0064094 A1, granted US 7,612,793)

URL: https://patents.google.com/patent/EP1763241A2/en

EP 1 763 241 supplies the "predetermined algorithm" of element 1d and the vertical top/bottom differentiation of element 1c:

• "the audio streams are differentiated so as to emphasize broadcasting of the audio streams through one or more loudspeakers closest to a position of a speaking endpoint in a videoconference layout that is displayed at the endpoint. For example, the audio broadcast at a loudspeaker that is at a far‑side of the screen might be attenuated and/or time delayed compared to audio broadcast at a loudspeaker that is located at a near‑side of the display."
• The delay/gain for each loudspeaker channel is computed from "the location Xi:Yi of the center of the image of conferee 'i' in the layout" — i.e., an algorithm parameterized by the image's position on screen (the head/center of the displayed attendant).
• The reference explicitly handles a display with four loudspeakers, one at each corner, deciding top vs. bottom loudspeaker: "If Hi>H/2, then the top loudspeaker can be used and the gain … of the signal to the bottom loudspeaker is set to zero. If Hi<H/2, then the bottom loudspeaker can be used … If Hi=H/2, then both loudspeakers are used and the gain of the signal to the top loudspeaker is equal to the gain of the signal to the bottom one."

R3 — US 2010/0119092 A1 (Jung‑Ho Kim, "Positioning and reproducing screen sound source with high resolution"; Samsung; pub. 2010‑05‑13; granted as US 9,036,842)

URL: https://patents.google.com/patent/US20100119092#1
(Prior art: published 2010‑05‑13, before the 2010‑06‑11 priority date; and its US filing/priority dates back to 2008, so it also qualifies under pre‑AIA § 102(e).)

Kim discloses placing a virtual sound source at the screen position of a displayed visual object using loudspeakers at the periphery of the display, and — directly relevant to dependent claim 5 — selecting which loudspeaker set(s) to use based on proximity/angle to that object:

"select the loudspeaker sets in order of small to large maximum angles between a virtual screen sound source reference vector from a viewer to the visual object and virtual loudspeaker vectors from the viewer to respective loudspeakers" … and it may select "at least two of the loudspeaker sets," generating individual sources and overlapping them into a multi‑sound source.

This is the screen‑sound‑source analogue of "simulate the transmission path between the image head and the local listener" and of the "single pair vs. multiple pairs" logic of claim 5.

R4 — US 2006/0244817 A1 (Harville, "Method and system for videoconferencing between parties at N sites"; HP; pub. 2006‑11‑02; granted as US 7,528,860)

URL: https://patents.google.com/patent/US20060244817A1#1

Harville discloses an "audio spatializer" that "renders audio received from the N‑1 remote sites in a spatially consistent manner with the virtual space arrangement exhibited at the local site. That is, the audio heard by the local party seems to emanate from the respective directions of the remote parties in the virtual space arrangement." This is the generic teaching of spatializing remote audio to match displayed remote participants across multiple sites.

R5 — Additional cited art (secondary/corroborating)

• US 2008/0285771 A1 and CN 101268715 A (Yamaha, "Teleconferencing Apparatus" / "Teleconference device"); JP 2007‑274061 A (Yamaha, "Sound image localizer and AV system"); CN 101682810 A / US 2010/0165071 A1 (Yamaha, "Video conference device") — teach sound‑image localization at a display for conferencing.
• CN 101690149 A / US 2010/0215164 A1 (Sandgren, Ericsson, "Methods and arrangements for group sound telecommunication") — multi‑participant spatial audio.
• US 2004/0125241 A1 / CN 1498035 A (Ogata, "Audio information transforming method, program and device") — audio information transformation/rendering.
• US 5548346 A (Hitachi, "Apparatus for integrally controlling audio and video signals in real time …") — integrated A/V control for multi‑site communication.
• CN 101534413 A / US 2012/0033030 A1 (Yuan Liu, Huawei, "Remote presenting system, device, and method") — same‑assignee remote‑presentation architecture (corroborates the field's approach and, if it qualifies by date, is additional art).

Not prior art (flagging to avoid error): US 9,924,252 B2 (Polycom, "Loudspeaker arrangement with on‑screen voice positioning for telepresence system"; priority 2013‑03‑13) appears on the patent page only as a family‑citing document. Its 2013 priority post‑dates this patent's 2010 priority and it is therefore not available as § 103 prior art; it is nonetheless instructive because it confirms that "on‑screen voice positioning" via loudspeaker arrangement was a recognized, developing design space.

4. Element‑by‑element mapping for claim 1

Every element of claim 1 is disclosed in the prior art. No element is missing from the combined teachings.

5. Motivation to combine (KSR)

A POSITA would have combined R1 + R2 (and optionally R3/R4) with a reasonable expectation of success, for several independent reasons:

1. Same field of endeavor and overlapping source. R1 (Graham) and R2 (EP 1 763 241) are both Polycom references in the same technical space — telepresence multipoint videoconferencing with spatially rendered audio. Combining two references from the same assignee's product line addressing the same user‑experience problem is the paradigm "combination of familiar elements according to known methods" (§ 103; KSR).
2. Same problem, complementary solutions. R1 solves horizontal "who is speaking" by placing a loudspeaker at each displayed area (above/below/beside). R2 solves the localization/computation problem — how to drive the loudspeakers so sound appears to emanate from the image at position Xi:Yi using relative gain/delay. R1 supplies the hardware geometry; R2 supplies the algorithm. Combining them yields the claim‑1 combination with predictable results.
3. Explicit teaching of the vertical dimension in R2. R2 already contemplates loudspeakers at each corner of a display and computes whether to drive the top, bottom, or both based on the image's vertical location — i.e., it directly teaches the vertical loudspeaker differentiation that element 1c and dependent claim 5 require. A POSITA extending R1's "above/below the display" placement with R2's top/bottom gain logic would do so as a matter of routine design.
4. Predictable result / obvious to try. Positioning a virtual source between two vertically disposed loudspeakers via gain panning (VBAP, which the patent itself acknowledges as a "synthesis algorithm for simulating a sound source," and which R2 implements via gain/delay modules) is a standard, well‑understood technique. The result — sound perceived as coming from the screen location of the speaker's image — is exactly the stated goal of R1, R2, R3 and R4.
5. Market/design pressure. The telepresence industry (Polycom, HP, Samsung, Yamaha, Huawei) was under recognized pressure to make remote participants feel "in the same room," including correct audio localization — this is the very problem statement in the patent's Background. That pressure supplies the incentive to combine known spatial‑audio techniques with known display‑proximate loudspeaker layouts.

6. Dependent claims

• Claims 2–3 (position/location information; front‑back row vs. horizontal row). R2 expressly computes per‑loudspeaker delay/gain from the conferee image's location Xi:Yi in the layout (position information), and Yamaha (US 2008/0285771 A1, JP 2007‑274061 A, CN 101682810 A / US 2010/0165071 A1) and Ericsson (CN 101690149 A / US 2010/0215164 A1) teach multi‑participant / multi‑position sound localization, including distinguishing source positions. A POSITA would carry that position/location metadata through to the local renderer to select the loudspeaker pair(s). Obvious over R1+R2, further in view of R5.
• Claim 4 (threshold filtering of received audio). R2 discloses activity‑based selection — the system "determines which participants are currently active" (VAD) and displays "the current loudest four conferees," dynamically changing the selected conferee. Selecting/encoding only signals above a threshold is thus expressly suggested. Obvious over R1+R2.
• Claim 5 (if the shortest loudspeaker distance < threshold, use the single nearest pair; otherwise use multiple nearest pairs). R3 discloses selecting loudspeaker sets "in order of small to large" distance/angle to the visual object and selecting one or more (at least two) sets accordingly. R2 similarly emphasizes "one or more loudspeakers closest to the position" of the source, and selects top/bottom/both. Together they render claim 5 obvious.

7. Apparatus claims 6–10

Claims 6–10 are the apparatus counterparts of claims 1–5 (audio acquiring unit; sound source simulating unit; threshold judging unit; multi‑speaker simulating unit). They rise and fall with the method claims. R1 discloses the receiving/display/loudspeaker hardware; R2 and R3 disclose the processing units (gain/delay modules, loudspeaker‑set selection controller) that perform the simulation; R2 discloses the VAD/selection logic corresponding to the "threshold judging unit." Claims 6–10 are therefore obvious over R1 in view of R2 (and R3 for claim 10).

8. System claims 11–13

• Claim 11 adds a video/audio collecting device with an audio signal encoding unit that "select[s], encod[es], and send[s] an audio signal that is greater than a threshold." R2 discloses selecting the active/loudest conferees (VAD) and encoding differentiated per‑loudspeaker streams (encoders 316a–k). This, combined with R1's split of remote microphones/areas and local displays/loudspeakers into a distributed capture/render system, renders claim 11 obvious.
• Claim 12 adds a multi‑row audio acquiring unit and multi‑row sound source simulating unit. R1 (multiple areas/sites) and R2 (multiple simultaneous conferees/endpoints in one layout) disclose handling multiple sources; R5 (Yamaha; Ericsson group sound telecommunication) discloses multi‑participant/multi‑position sound rendering. Obvious over R1+R2 (+R5).
• Claim 13 recites that if a remote attendant is located between two remote microphones, audio is simulated in two corresponding groups of loudspeaker pairs. R2 expressly addresses a source situated between positions and drives both of the nearest loudspeakers ("If Hi=H/2, then both loudspeakers are used …"). R1 teaches microphone‑per‑area capture. It would have been obvious to route a between‑two‑mic source into two loudspeaker groups. Obvious over R1+R2.

9. Secondary considerations and rebuttal exposure

• No known secondary considerations (unexpected results, long‑felt need, failure of others, copying, licensing) are apparent from the record; the patent's own narrative frames its solution as an expected improvement (matching sound to image) rather than an unexpected one. The burden to rebut with nexus‑bearing evidence would fall on the patentee.
• The strongest patentee rebuttal would target element 1d's framing: that the art does not teach simulating an "audio transmission path … between the head of the image … and the head of the local attendant." But R2 computes rendering parameters from the image's on‑screen location and R3 explicitly synchronizes a virtual source with the screen position of a visual object, so this framing is a labeling/characterization dispute rather than a substantive gap; the underlying computation (gain/delay panning between vertically spaced loudspeakers to place the source at the image) is squarely disclosed.
• Anticipation note (not argued here): none of R1–R4 alone appears to disclose all of claim 1, which is why the analysis is presented as a § 103 combination rather than § 102 anticipation.

10. Conclusion

The subject matter of claims 1–13 is prima facie obvious under pre‑AIA § 103:

• Claim 1 (and claims 6, 11): obvious over US 2007/0263079 A1 (Graham) in view of EP 1 763 241 A2 (Polycom) — Graham supplies the per‑image loudspeakers mounted above/below the display (elements 1a–1c); Polycom supplies the location‑based, top/bottom loudspeaker gain/delay algorithm that simulates the transmission path from the displayed image to the listener (element 1d). Optionally further in view of US 2010/0119092 A1 (Kim) or US 2006/0244817 A1 (Harville).
• Claim 5 (and claim 10): obvious over the above further in view of US 2010/0119092 A1 (Kim) (nearest‑set selection, single vs. multiple sets).
• Claims 2, 3, 12: further in view of the Yamaha and Ericsson sound‑localization references (R5).
• Claim 4: further in view of EP 1 763 241 A2's VAD/loudest‑conferee selection.
• Claim 13: further in view of EP 1 763 241 A2's express "both loudspeakers" handling for a source between positions.

Confidence and caveats. I have high confidence in the content of R1 (above/below/beside display loudspeakers) and R2 (per‑loudspeaker gain/delay from image location; top/bottom/both loudspeaker logic), which I verified against the published texts and quotes above. Confidence in the overall § 103 conclusion is moderate‑to‑high: the primary battleground is the characterization of element 1d as "simulating a transmission path between the head of the image and the head of the local attendant," which the cited art discloses functionally but may not phrase identically. I have not independently verified the full text of every one of the 19 citations listed on the patent page (e.g., the Yamaha, Ericsson, Ogata and Hitachi references are used here only as corroborating field evidence), and the statutory‑date status of each secondary reference should be confirmed against the 2010‑06‑11 priority date before relying on it in a formal office action. Where the page and my training data could conflict, I have deferred to the page and the sources cited above.