US 7525535

I'll search for information on this specific patent number.

I have good data from Google Patents and USPTO sources. Let me search for CAFC 2026 docket activity specific to this patent number.

Let me do additional targeted searches on the USPTO record and any CAFC 2026 docket for this specific patent.

I have sufficient authoritative information from the full patent text (Google Patents/USPTO mirrors) and litigation searches. Note: my searches did not surface any CAFC 2026 appeal docket specifically naming 7525535; the 2026-dated IPWatchdog CAFC article concerned a different VideoLabs patent (7,440,559), not this one. Findings below.

US Patent 7,525,535 (US7525535B2) — "Portable terminal"

Abstract (verbatim): "A portable terminal has a body including a transparent window integrally formed therein, a display disposed beneath the body and visible through the transparent window, and a touch screen located between the display and the body, the touch screen permitting signal input in a capacitive manner."

Technology background (plain language)

Prior-art portable terminals exposed a pressure-sensitive touch pad through an opening cut through the device housing, which looked bad and let dust/water inside. The invention instead mounts a capacitive touch pad between a display and a housing whose transparent window is integrally molded into the housing (e.g., double injection molding, optionally with an in-mold opaque film defining the window). Because no opening is needed, the front surface can be smooth/uninterrupted and sealed.

Independent claims — plain-language overview

Claim 1 (apparatus):

• A housing with a transparent window integrally formed in it; an opaque film on the housing's lower surface has an open portion defining the transparent window.
• A display disposed at the housing, showing information through the transparent window.
• A capacitive touch pad between housing and display, with one end electrically connected to the display and/or a main circuitry substrate via a flexible printed circuit (FPC).
• The touch pad itself has: (a) a touch-sensing unit on the transparent window's inner surface, touchable by the user's body through the window; and (b) a signal-transferring unit at the edge of the sensing unit that transfers a signal corresponding to a sensed coordinate value.
• The FPC carries a control circuit that converts the signal from the signal-transferring unit into the coordinate value and sends it to a controller of the main circuitry substrate.
• In essence: a sealed, integrally windowed portable terminal whose capacitive touch pad is read out through an FPC-mounted control circuit that digitizes touch position for the device controller.

Claim 5 (apparatus, narrower than claim 1 in structure but broader in signal path):

• Same housing/transparent-window/opaque-film-with-open-portion, display, and capacitive touch-pad-between-housing-and-display limitations, with the touch pad's one end electrically connected to the display and/or main circuitry substrate via an FPC.
• The FPC has a control circuit mounted on it that converts a signal generated by the touch pad (not necessarily via the signal-transferring unit, as claim 1 requires) into a coordinate value and transfers that value to the main circuitry substrate's controller.
• In essence: a simplified independent version focused on the FPC-mounted control circuit performing the coordinate conversion, without claim 1's detailed touch pad/signal-transferring-unit sub-structure.

Dependent claims

• Claim 2: Housing formed by double injection molding.
• Claim 3: The edge signal-transferring unit is transparent.
• Claim 4: A gap-maintaining pad is interposed between the edge of the touch pad and the edge of the display to keep a gap between them.

Litigation / CAFC docket notes (with uncertainty flagged)

• Searches of USPTO mirrors and district-court docket aggregators confirm 7,525,535 is being actively asserted by VideoLabs, Inc., including in VideoLabs, Inc. v. TCL Technology Group Corp. et al. (E.D. Tex. 2:25-cv-00161, filed Feb. 10, 2025, listed as closed) and a VideoLabs v. Apple matter that resolved as to Apple (the patent "remains active and enforceable against third parties," per a PatSnak litigation summary). The Google Patents record also flags Texas Western, California Northern, and California Eastern cases involving the patent family.
• I did not find a CAFC 2026 appeal docket specifically naming patent 7,525,535 in my searches. If such an appeal exists, it was not surfaced; treat the absence of CAFC 2026 docket data as unverified rather than conclusive. The single CAFC decision found in 2026 (VL Collective IP v. Netflix) involved VideoLabs' U.S. Patent No. 7,440,559 — a different patent, not this one.

Sources: https://patents.google.com/patent/[US7525535](/patent/US7525535)/en; https://uspto.report/patent/grant/7525535; https://www.freepatentsonline.com/7525535.html; https://www.docketalarm.com/search/?q=patent%3A%288291236%29 (VideoLabs v. TCL docket listing 7525535 among asserted patents); PatSnap litigation summary of VideoLabs v. Apple.

Based on my searches of the available docket and litigation databases, here is the known litigation involving US 7,525,553 (US7525535B2, "Portable terminal"). I have limited the list to matters that specifically name this patent number, and I flag venue/status points where sources conflict.

District-court litigations asserting US 7,525,553

1. VideoLabs, Inc. and VL Collective IP LLC v. [Apple Inc.](/litigations/by-plaintiff/Apple%20Inc.)

• Plaintiffs: VideoLabs, Inc.; VL Collective IP LLC
• Defendant: Apple Inc.
• Case No.: 3:23-cv-01307 (some records additionally flag No. 4:23-cv-01307; see venue note below)
• Jurisdiction: Reported inconsistently — PatSnap's PACER-based summary says California Eastern District Court (Judge Araceli Martinez-Olguin), while the Stanford NPE Litigation Database and the case-number prefix convention ("3:") point to the Northern District of California. Google Patents/Unified Patents flags list both a California Northern case (4:23-cv-01307) and a California Eastern case (3:23-cv-01307). I cannot fully reconcile this discrepancy.
• Filing date: 2023-03-21 (per PatSnap)
• Patents asserted: US 7,525,553 and US 8,605,794
• Status/Outcome: Dismissed with prejudice pursuant to a stipulated agreement (~199 days after filing, i.e., ~October 2023), each party bearing its own fees/costs. No liability finding, claim construction, or validity determination was made. VideoLabs' claims against Apple are extinguished, but the patent was reported to remain active and enforceable against third parties.

2. VideoLabs, Inc. v. ASUSTeK Computer Inc. et al.

• Plaintiff: VideoLabs, Inc.
• Defendants: ASUSTeK Computer Inc. et al.
• Case No.: 6:22-cv-00720
• Jurisdiction: Texas Western District Court (Waco Division; Judge Alan D. Albright)
• Filing date: 2022-06-30
• Patents asserted: 7,525,553 among a multi-patent portfolio (the patent was identified as an asserted patent in this matter in VideoLabs' related-matter disclosure in IPR2024-01025)
• Status/Outcome: Terminated/closed 2025-07-30; the docket includes STAYED and CLOSED flags. (The related IPR mandatory-notice filed July 3, 2024, still described this case as pending.)

3. VideoLabs, Inc. v. ASUSTeK Computer Inc.

• Plaintiff: VideoLabs, Inc.
• Defendant: ASUSTeK Computer Inc.
• Case No.: 6:23-cv-00640
• Jurisdiction: Texas Western District Court
• Filing date: 2023-08-31
• Patents asserted: 7,525,553 (independent claim 5 asserted) together with 7,970,059, 8,220,027, and 8,291,236, per the complaint analysis
• Status/Outcome: Voluntarily dismissed (so stated in VideoLabs' mandatory-notice filing in IPR2024-01025, dated July 3, 2024); case docketed as closed.

4. VideoLabs, Inc. v. TCL Technology Group Corporation et al.

• Plaintiff: VideoLabs, Inc.
• Defendants: TCL Technology Group Corporation; TCL Electronics Holdings, Ltd. (f/k/a TCL Multimedia Technology Holdings, Ltd.); TCL Industries Holdings Co., Ltd.; TCL King Electrical Appliances (Huizhou) Co., Ltd.; T.C.L. Industries Holdings (H.K.) Ltd.; TTE Corporation; TCL Moka International Ltd.; TCL Moka Manufacturing S.A. de C.V.; Manufacturas Avanzadas S.A. de C.V.; TCL Smart Device (Vietnam) Co., Ltd.; Shenzhen TCL New Technology Co., Ltd.; TCL Optoelectronics Technology (Huizhou) Co., Ltd.; TCL Overseas Marketing Ltd.
• Case No.: 2:25-cv-00161
• Jurisdiction: Texas Eastern District Court (Marshall Division; Judge Rodney Gilstrap; Magistrate Judge Roy S. Payne)
• Filing date: 2025-02-10
• Patents asserted: 7,525,553 (at least independent claim 5, per the complaint, ¶183) among seven patents: 7525535; 7769238; 7970059; 8139878; 8220027; 8291236; 8667304
• Status/Outcome: Dismissed with prejudice by Order No. 27 dated 2025-11-14 (docket marked CLOSED). The accused products were TCL touchscreen tablets and phones (e.g., TCL TAB 10s).

Other proceedings / caveats

• No CAFC appeal specifically naming 7,525,553 was found in my searches (consistent with the prior patent summary). The 2026 Federal Circuit decision in the VideoLabs/Netflix matter concerned U.S. Patent No. 7,440,559 — a different patent.
• The Google Patents record for the patent family also flags Texas Western, California Northern, and California Eastern cases and a darts-ip "first worldwide family litigation" entry; the Texas Western and California entries correspond to the ASUSTeK and Apple matters above. The California Northern flag (4:23-cv-01307) may be a separate Apple action or a duplicate/miscataloged entry — I could not verify it independently before the search limit was reached.
• PTAB proceedings referencing the litigation (e.g., IPR2024-01025, Roku, Inc. v. VideoLabs, Inc.) exist but are inter partes reviews of related portfolio patents, not direct infringement litigation on 7,525,553, and I did not confirm that 7,525,553 itself is the IPR target.

Key sources: Docket Alarm (2:25-cv-00161 docket, including dismissal Order No. 27); Ex Parte complaint analysis for 2:25-cv-00161 and 6:23-cv-00640; PatSnap litigation summary of VideoLabs v. Apple (3:23-cv-01307); Stanford NPE Litigation Database (npe.law.stanford.edu/patent/7525535); RPX Insight (6:23-cv-00640); VideoLabs mandatory notice in IPR2024-01025 (DocketAlarm PDF, 2024-07-03); Google Patents litigation flags (https://patents.google.com/patent/[US7525535](/patent/US7525535)/en).

I'll research whether any AIA trial proceedings exist for this patent. The canonical ODP data reports none, but let me search to verify and flag anything newer.

The initial results show IPRs against other VideoLabs patents (7,440,559, 8,291,236, 7,970,059) but none against 7,525,535. Let me run additional targeted checks to be thorough.

Proceedings overview

Total AIA trial proceedings on file: zero (0). There are no inter partes reviews, post-grant reviews, or covered business method reviews — active, instituted, denied, settled, or decided — against US 7,525,535. The USPTO Open Data Portal ingest returns no proceedings, and independent web searching for "7525535" / "7,525,535" combined with IPR/PGR/PTAB terms surfaces only proceedings on other VideoLabs-family patents (e.g., 7,440,559, 8,291,236, 7,970,059, 8,605,794, 7,233,790), none naming this patent. The defensive posture for a defendant: all five claims (1–5) are untested before the PTAB — no claim has been canceled or sustained in an AIA trial, so validity is virgin territory that an accused infringer can still shape with a well-built § 102/§ 103 petition. The absence of any IPR despite years of assertion by VideoLabs is itself a strategic data point (see Strategic summary).

No per-proceeding sections follow, because there are no proceedings to report. I am not inventing any. What follows is the cross-checked negative and what it means.

Strategic summary

Claims status: all CANCELED vs. SUSTAINED vs. UNTESTED — every claim is UNTESTED. Claims 1 (independent apparatus claim: integrally formed transparent window + opaque film open portion + capacitive touch pad with touch-sensing unit and signal-transferring unit + FPC-mounted control circuit converting the signal into a coordinate value for the controller) and 5 (independent apparatus claim: same window/housing/display/touch-pad structure with the FPC-mounted control circuit, stated more broadly as converting "a signal generated by the touch pad"), plus dependent claims 2 (double injection molding), 3 (transparent signal-transferring unit), and 4 (gap-maintaining pad), remain fully in force. No PTAB panel has ever construed these claims in an AIA trial, no prior art has been tested against them at the Board, and no estoppel under § 315(e)(2) binds anyone from challenging them. There has also been no reexamination surfaced on this patent, so the record contains no agency merits holding at all.

Estoppel landscape — wide open. Because no petitioner has ever filed an IPR on 7,525,535, § 315(e)(2) estoppel has not attached against anyone with respect to this patent. Any ground that was raised, or reasonably could have been raised, in a prior AIA petition is unavailable to a prior petitioner and its privies — but here there is no prior petitioner. For a defendant currently being asserted against (VideoLabs has asserted this patent in, e.g., VideoLabs, Inc. v. TCL Technology Group Corp. et al., E.D. Tex. 2:25-cv-00161, which was dismissed with prejudice in 2025), every § 102/§ 103 ground based on patents and printed publications predating the 2006-07-27 priority date is still available. Note the obviousness/knowledge window: this is a 2006 Korean-origin touch-screen/portable-terminal patent, so pre-2006 capacitive-touch and handset-integration art (e.g., the references the examiner already cited — US 2006/0097991 A1 "Multipoint touchscreen," US 2005/0280635, EP 1,758,345, US 2003/0040287 — plus any art not of record, which is where a petitioner should look hardest) is in play.

Pattern signals. No single petitioner has filed multiple IPRs on this patent because none has filed any. The broader pattern, however, is instructive: VideoLabs patents are being aggressively attacked at the PTAB and are losing. Netflix's counsel (Willkie) invalidated all claims of three VideoLabs patents (7,233,790, 7,440,559, 8,605,794), and the CAFC affirmed the 7,440,559 invalidation in August 2026 (VL Collective IP, LLC v. Netflix, Inc., No. 25-1132, Fed. Cir. 2026-08-10, nonprecedential). Roku, Dell, and Hisense have also filed or pursued IPRs on VideoLabs patents (e.g., IPR2025-00071 on the '559 patent; IPR2022-00701 on 7,970,059, denied; IPR2025-00882 on 8,291,236, discretionary denial). Defensive-aggregator involvement is visible on the VideoLabs litigation side — Unified Patents data tracks the VideoLabs district-court cases — but Unified Patents has not filed an IPR on 7,525,535. Why this patent has escaped challenge is a fair question: it may be that asserted defendants settled early (the TCL case closed with prejudice in 2025), or that licensees/defendants judged the touch-pad-handset claims less central than VideoLabs' content-delivery portfolio. Whatever the reason, the patent is not "hardened" by PTAB survival — it is simply uncontested at the Board, which is a materially different (and more defendant-favorable) posture than a patent that has beaten IPRs.

Recommended next steps

• There is no FWD to cite and no canceled claim to lean on. Do not represent to a court or in a negotiation that 7,525,535 has been weakened by the PTAB — it has not. Claims 1–5 are presump-tively valid and untested. The VideoLabs PTAB losses that are on the public record all concern different patents (7,440,559, 8,605,794, 7,233,790); citing them for this patent would be sanctionable overreach.
• If you are a defendant facing assertion today, the strategic window is a de novo IPR. File within one year of service of the complaint (35 U.S.C. § 315(b)). Build the petition around art not already of record in the file history — the examiner already considered the references listed in the patent's citation list, so § 325(d) discretion will favor you if your primary references are new. The claim set is small (two independents, three dependents), and claim 1's specific architecture (opaque film with an open portion defining the window; touch-sensing unit + signal-transferring unit pair; FPC-mounted control circuit doing the coordinate conversion) gives discrete § 103 attack surfaces.
• No active proceeding means no statutory deadlines to track — there is no institution-decision deadline, no oral-hearing date, and no FWD due date for this patent. The only date on the horizon is the patent's anticipated expiration on 2027-07-26 (maintenance fees paid through the 12th year; status active). An IPR filed now would need to be instituted and reach FWD well inside that window — the Board's 1-year trial clock runs from institution, so a petition filed in the next several months is still capable of producing a merits decision before expiry.
• Verify before you file. The ODP-derived "no proceedings" record is canonical as of its most recent ingest, and my searches corroborated it, but PTAB dockets update continuously. Re-check the USPTO PTAB End-to-End system (search by patent number 7,525,535) immediately before any filing deadline to confirm no petition has landed in the intervening period.

Sources: USPTO Open Data Portal proceeding data (in-prompt block); https://uspto.report/patent/grant/7525535; https://patents.google.com/patent/US7525535/en; https://www.docketalarm.com/search/?q=patent%3A%288291236%29 (VideoLabs v. TCL, E.D. Tex. 2:25-cv-00161, listing 7525535 among asserted patents; case closed 2025-11-14); https://law.justia.com/cases/federal/appellate-courts/cafc/25-1132/25-1132-2026-08-10.html (CAFC affirmance of IPR2023-00630 on the different '559 patent); https://portal.unifiedpatents.com/ptab/case/IPR2022-00701 (Dell IPR on the different '059 patent); https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2025-00882 (Hisense IPR on the different '236 patent).

I'll research the USPTO assignment records and related NPE context before drafting the report.

Let me search for the correspondent attorneys on the key assignment records.

Inventors

Both inventors executed an assignment to LG Electronics Inc. dated 2007-04-23 (recorded 2009-02-12, reel 022260/0484). The application family originated as Korean App. 10-2006-0071043 (filed 2006-07-27), consistent with LG R&D employment. I found no evidence that either inventor left LG shortly after filing; do not infer a "departure precedes fire-sale" pattern here.

Original assignee

• Entity on the issued patent: LG Electronics Inc. (Republic of Korea).
• Line of business / product embodiment: LG is (and was) a major consumer-electronics and mobile-handset manufacturer. The claims cover a portable-terminal front structure — integrally molded transparent window, opaque film defining the window, capacitive touch pad between housing and display, FPC-mounted control circuit. LG shipped contemporaneous capacitive-touch handset lines (the claim structure is consistent with LG's 2007–2009 touchscreen candy-bar phones); whether any specific shipped model embodied every claim limitation is not documented in the sources I have.
• Current status: Operating. LG Electronics Inc. continues in business (its mobile-handset division was wound down in 2021, but the company is not bankrupt and was not in any insolvency proceeding when it sold this patent).

Assignment timeline

Sources: USPTO Assignment Center / Google Patents "Legal events" (PRS) records for US 7525535. Important caveat: the correspondent-of-record field for each reel/frame was not retrievable from the sources available to me (assignmentcenter.uspto.gov requires interactive lookup by reel/frame). I have not fabricated correspondent names; each entry below cites the reel/frame so the correspondent can be pulled directly. Every conveyance listed is real and appears in the Google Patents legal-event feed.

• 2007-04-23 (executed) / recorded 2009-02-12 — Reel 022260/0484

  • Conveyance: Assignment of Assignors' Interest
  • Assignor: Jong-Hun Kim; Min-Ho Park
  • Assignee: LG Electronics Inc.
  • Correspondent: not retrieved — this is the inventors-to-LG record.
  • Context: Original ownership vesting; recorded pre-grant (patent issued 2009-04-28).

• 2013-12-19 (executed) / recorded 2013-12-20 — Reel 031866/0697

  • Conveyance: Lien
  • Assignor: Optis Cellular Technology, LLC
  • Assignee: Highbridge Principal Strategies, LLC (as Collateral Agent)
  • Correspondent: not retrieved.
  • Context: Financing/securitization — Optis pledged the just-acquired portfolio as collateral the same day it executed the LG purchase (see below).

• 2013-12-19 (executed) / recorded 2014-02-06 — Reel 032167/0406

  • Conveyance: Security Agreement
  • Assignor: Optis Cellular Technology, LLC
  • Assignee: Wilmington Trust, National Association (as Collateral Agent)
  • Correspondent: not retrieved.
  • Context: Second layer of collateral agency on the same financing.

• 2013-12-19 (executed) / recorded 2014-02-23 — Reel 032326/0618

  • Conveyance: Assignment of Assignors' Interest
  • Assignor: LG Electronics, Inc.
  • Assignee: Optis Cellular Technology, LLC
  • Correspondent: not retrieved.
  • Context: Acquisition by an NPE — outright sale of the patent (with a large LG portfolio) to a Texas licensing entity; executed the same day Optis granted the liens above, i.e., a financed closing.

• 2014-04-24 (executed) / recorded 2014-04-30 — Reel 032786/0546

  • Conveyance: Assignment of Assignors' Interest (erroneous; corrected below)
  • Assignor: Optis Cellular Technology, LLC
  • Assignee: Highbridge Principal Strategies, LLC (as Collateral Agent)
  • Correspondent: not retrieved.
  • Context: Recorded as an "assignment" but was actually a security grant; corrected two months later.

• 2014-04-24 (executed) / recorded 2014-07-08 — Reel 033281/0216

  • Conveyance: Corrective Assignment (nature of conveyance corrected to read "Security Interest"; corrects reel 032786/0546)
  • Assignor: Optis Cellular Technology, LLC
  • Assignee: Highbridge Principal Strategies, LLC (as Collateral Agent)
  • Correspondent: not retrieved — same parties as 032786/0546 (recurrence within this chain, but this is a correction of the same instrument, not new counsel evidence).
  • Context: Paperwork cleanup in the same financing cascade.

• 2016-07-11 (executed) / recorded 2016-07-15 — Reel 039359/0916

  • Conveyance: Release by Secured Party
  • Assignor: HPS Investment Partners, LLC (collateral-agent role evidently assumed from/succeeding Highbridge Principal Strategies)
  • Assignee: Optis Cellular Technology, LLC
  • Correspondent: not retrieved.
  • Context: Release of the Highbridge/HPS lien (this is why Google Patents' "current assignee" listing still shows HPS — a stale artifact; the lien was released in 2016).

• 2020-11-16 (executed/recorded) — Reel 054380/0250

  • Conveyance: Release by Secured Party
  • Assignor: Wilmington Trust, National Association (as Collateral Agent)
  • Assignee: Optis Cellular Technology, LLC
  • Correspondent: not retrieved.
  • Context: Release of the Wilmington security agreement, clearing title immediately before the transfer to VideoLabs.

• 2020-11-13 (executed) / recorded 2020-12-22 — Reel 054723/0271

  • Conveyance: Assignment of Assignors' Interest
  • Assignor: Optis Cellular Technology, LLC
  • Assignee: VideoLabs, Inc. (California)
  • Correspondent: not retrieved.
  • Context: Transfer-to-asserter — end of the chain; VideoLabs is the current owner of record and the plaintiff asserting this patent.

Current owner of record: VideoLabs, Inc. (per reel 054723/0271). HPS Investment Partners LLC and Wilmington Trust appear only as released collateral agents; neither owns the patent.

Timeline diagram

timeline
    title Ownership of US 7525535
    2007 : Filed by LG Electronics
         : Inventors assign to LG
    2009 : Patent issued
    2013 : Sold to Optis Cellular
         : Lien and security granted to lenders
    2014 : Recordings completed
         : Highbridge interest corrected to security
    2016 : HPS lien released
    2020 : Lenders release liens
         : Optis assigns to VideoLabs
    2022 : VideoLabs suit filed
    2025 : VideoLabs v TCL filed

NPE / troll-pattern signals

1. Shell-entity transfer — present. The patent moved from LG Electronics (operating manufacturer) to Optis Cellular Technology, LLC (reel 032326/0618, executed 2013-12-19) and then to VideoLabs, Inc. (reel 054723/0271, executed 2020-11-13). Neither Optis nor VideoLabs manufactures or sells products; both are patent-monetization entities whose only public activity is licensing/litigation (see signal 2). The "LLC/Inc. with no products" finding rests on their litigation records, not on naming alone.

2. Known asserter in the chain — present. Current assignee VideoLabs, Inc. (reel 054723/0271) is the plaintiff in the district-court matters linked to this patent on Google Patents: Texas Western 6:23-cv-00640 and 6:22-cv-00720, Texas Eastern 2:25-cv-00161 (VideoLabs v. TCL, filed 2025-02-10), and California Northern/Eastern 4:23-cv-01307 / 3:23-cv-01307 (VideoLabs v. Apple, which resolved as to Apple with the patent remaining enforceable). VideoLabs and the Optis group both appear in public NPE/asserter directories (Unified Patents litigation data and RPX-type trackers). Prior assignee Optis Cellular Technology LLC is likewise a known licensing/assertion entity (Optis group litigation against Apple).

3. Repeat correspondent across the chain — unclear. Correspondent names could not be retrieved from the sources I could access, so I cannot confirm or exclude a single repeat-player attorney. The only verifiable recurrence is party-level: reels 032786/0546 and 033281/0216 are the same Highbridge/Optis instrument (original + correction). Pull the correspondent field for reels 031866/0697, 032167/0406, 032326/0618, 032786/0546, 033281/0216, 039359/0916, 054380/0250, and 054723/0271 at the USPTO Assignment Center to test this signal.

4. Cascading transfers — present. In a ~5-month window (executions 2013-12-19 through 2014-04-24) the record shows: LG→Optis assignment (032326/0618) executed the same day Optis granted a lien to Highbridge (031866/0697) and a security agreement to Wilmington (032167/0406), followed by the erroneous "assignment" to Highbridge and its correction to "security interest" (032786/0546 → 033281/0216). This is the classic signature of a financed portfolio acquisition — the buyer borrowed against the patents at closing.

5. Pre-litigation transfer — unclear. The transfer to the asserting entity (VideoLabs, executed 2020-11-13, recorded 2020-12-22) predates the earliest VideoLabs suits I could verify (2022) by more than six months. On the strict 6-month test this is not present on the available record; however, the 2020 assignment was plainly made to the entity that would assert, and the 2020 lien releases (054380/0250) cleared title for exactly that purpose. If earlier VideoLabs complaints naming 7525535 exist (e.g., 2021), I could not surface them.

6. Bankruptcy fire-sale — not present. LG Electronics was not in Chapter 7/11; the 2013 sale to Optis was a negotiated divestiture, not an insolvency proceeding (contrast Kodak/Nortel).

7. Privateering — unclear. LG (an operating handset maker) sold to an NPE that now litigates, which fits the privateering shape, but I found no SEC filing or other evidence that LG retained an economic interest in or direction over the Optis/VideoLabs assertions. Without that, this is divestiture-to-monetize, not proven privateering.

8. Defensive aggregator (anti-NPE) — not present. The chain terminates at VideoLabs, Inc., an asserting plaintiff. RPX, AST, LOT, Unified Patents, and OIN appear nowhere in the assignment record.

Verdict

NPE — high confidence.

Two or more strong signals are present: (a) the patent was sold by an operating company (LG Electronics) to Optis Cellular Technology, LLC, a licensing-only entity (reel 032326/0618), in a same-day financed closing evidenced by the lien and security-agreement cascade (reels 031866/0697, 032167/0406, 032786/0546, 033281/0216); and (b) the chain terminates at VideoLabs, Inc. (reel 054723/0271, executed 2020-11-13), a known high-frequency plaintiff that is actively asserting this patent in the Texas and California cases listed on the Google Patents record. Neither Optis nor VideoLabs ships products embodying the claims, and no defensive aggregator holds the patent.

Verification: search patent number 7525535 at https://assignmentcenter.uspto.gov/ (or https://assignment.uspto.gov/patent/index.html) and pull the correspondent field for reels 031866/0697, 032167/0406, 032326/0618, 032786/0546, 033281/0216, 039359/0916, 054380/0250, and 054723/0271 to complete the one open item (signal 3).

I have gathered enough authoritative data from the full Google Patents/USPTO record (provided in the task) and targeted searches to complete the analysis. Below is the requested prior-art assessment.

1. USPTO record verification for patent 7525535

USPTO/Google-Patents record for US7525535B2 ("Portable terminal"; application no. 11/828,978, filed 2007-07-26; granted 2009-04-28; inventors Jong-Hun Kim and Min-Ho Park; originally assigned to [LG Electronics Inc.](/litigations/by-plaintiff/LG%20Electronics%20Inc.); priority to Korean App. 10-2006-0071043, filed 2006-07-27) confirms the following eight references listed in the "Citations (8)" section of the patent's file wrapper record. All eight are reproduced literally from the patent record — no similar-number substitutions have been made. The asterisked entries (*) are examiner-supplied citations; unasterisked entries were applicant-supplied (IDS) citations.

Important statutory note: Because US7525535 was filed 2007-07-26 (pre-AIA), § 102 analysis is under pre-AIA 35 U.S.C. § 102(a)/(b)/(e). The effective prior-art cutoff for § 102(b) is one year before the US filing date (2006-07-26). Whether the earlier Korean priority date (2006-07-27) is credited affects only § 102(a) status of references published between 2006-07-27 and 2007-07-26. Anticipation requires a single reference disclosing every limitation of the claim.

2. The eight cited references and their § 102 potential

(1) US20010012769A1 — Sirola, "Wireless communication device and a method of manufacturing a wireless communication device" (examiner-cited *)

• Full citation: US Patent Application Publication US 2001/0012769 A1, inventor Jukka Sirola, published Aug. 9, 2001 (priority date Nov. 27, 1997; Nokia-family application).
• Dates: Priority 1997-11-27; publication 2001-08-09 — well before both the 2006-07-27 Korean priority and the 2007-07-26 US filing. Prior art under § 102(a) and § 102(b).
• Description: A wireless communication device (mobile phone) having a touch-sensitive display overlaid by a movable cover part carrying a single transparent, flexible, foil-like "activation means." In the closed position the foil transmits finger pressure to activation areas on the touch display, and the display is readable through the transparent foil without an aperture.
• Potential § 102 anticipation: Does not anticipate any of claims 1–5. It lacks a capacitive touch pad (pressure-transmission to a touch-sensitive display), a touch pad between housing and display, a transparent window integrally formed in the housing, an opaque film with an open portion, and the FPC-mounted control circuit converting signals to coordinate values. Its only overlap is the general concept of viewing a display through a transparent protective layer.

(2) US20030040287A1 — [[Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.), Ltd.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.), "Display window of a mobile phone" (applicant-cited)

• Full citation: US Patent Application Publication US 2003/0040287 A1, Samsung Electronics Co., Ltd., published Feb. 27, 2003 (priority/filing date Aug. 21, 2001).
• Dates: Published 2003-02-27 — prior art under § 102(a)/(b).
• Description: A display-window structure for a mobile phone (folder-type device), relating to the window/lens covering and protecting the phone's display and its mounting relative to the phone body.
• Potential § 102 anticipation: Does not anticipate claims 1–5. It concerns a conventional display window, not a capacitive touch pad disposed between the housing and display, an integrally molded window defined by an opaque film opening, or an FPC-mounted control circuit. At most it touches the "display visible through a window" aspect of the claim preambles.

(3) US6888591B2 — Samsung Electronics Co., Ltd., "LCD assembly used with a personal digital assistant" (examiner-cited *)

• Full citation: US Patent 6,888,591 B2, Samsung Electronics Co., Ltd., granted May 3, 2005 (filed July 2, 2002).
• Dates: Issued/filed 2002–2005 — prior art under § 102(a)/(b).
• Description: An LCD assembly for a PDA in which the display module and an associated input/panel structure are arranged within a case, addressing assembly and window/bezel integration between the LCD and the device housing.
• Potential § 102 anticipation: Does not fully anticipate claims 1 or 5: it does not disclose the claimed capacitive touch pad between housing and display, the touch pad's one-end electrical connection to display/main substrate via an FPC, or the FPC-carried control circuit converting the touch signal into a coordinate value for a controller. No dependent claim (2–4) is anticipated. Its relevance is to the display-in-housing/window assembly context, i.e., a § 103 obviousness building block rather than § 102.

(4) US20050280635A1 — Shoji Hinata (Seiko Epson), "Input device, electro-optical device, electronic apparatus, method of manufacturing input device, and method of manufacturing electro-optical device" (applicant-cited)

• Full citation: US Patent Application Publication US 2005/0280635 A1, inventor Shoji Hinata (Seiko Epson), published Dec. 22, 2005 (filed June 22, 2004).
• Dates: Filed 2004-06-22; published 2005-12-22 — prior art under § 102(a)/(b), and § 102(e) as of its US filing date.
• Description: An input device (touch panel) mounted on a display surface of an electro-optical panel (LCD/OLED), supported in a case/bezel having a window. It addresses substrate thickness, a thinned coordinate-input region surrounded by a thick frame, sealing, and prevention of erroneous input from case-induced stress. It mentions capacitive and ultrasonic touch panels as known alternatives to the resistive type.
• Potential § 102 anticipation: Does not anticipate claims 1–5. It does not disclose a capacitive touch pad sandwiched between the display and a housing whose transparent window is integrally formed/defined by an opaque-film opening, nor an FPC with a mounted control circuit performing coordinate conversion. Its housing-window + touch panel teaching is an obviousness ( § 103) building block only.

(5) US20060097991A1 — Hotelling et al. (Apple Computer), "Multipoint touchscreen" (examiner-cited *)

• Full citation: US Patent Application Publication US 2006/0097991 A1, inventors Steve Hotelling, Joshua A. Strickon, Brian Q. Huppi (Apple Computer, Inc.), published May 11, 2006 (Appl. No. 10/840,862, filed May 6, 2004; later granted as US 7,663,607 B2 on Feb. 16, 2010).
• Dates: Filed 2004-05-06; published 2006-05-11 — prior art under § 102(a)/(b), and § 102(e) as of May 6, 2004.
• Description: A touch panel having a transparent capacitive sensing medium that detects multiple simultaneous touches/near-touches at distinct locations and produces distinct position signals; discloses the sensor structure, drive/sense electrode lines, and a controller/processor interpreting touch data for a computing device with a display.
• Potential § 102 anticipation: Does not literally anticipate claims 1 or 5 because it lacks the housing-side limitations: a transparent window integrally formed in the housing with an opaque film having an open portion defining the window; and it does not teach the specific FPC-mounted control circuit converting the signal into a coordinate value (its controller is a device-level processor). Claims 2–4 are likewise not anticipated. It is, however, the strongest capacitive-touch technology reference and would be central to any § 103 obviousness case on the touch-pad/FPC-control elements of claims 1 and 5.

(6) US20070000764A1 — David Bellows (Nokia), "Arrangement including rigid housing and display" (examiner-cited *)

• Full citation: US Patent Application Publication US 2007/0000764 A1, inventor David Bellows, published Jan. 4, 2007 (filed June 30, 2005).
• Dates: Filed 2005-06-30; published 2007-01-04. As a US application filed before the 2006-07-27 priority date, it is § 102(e) prior art regardless of the priority claim; it published before the 2007-07-26 US filing.
• Description: An arrangement for an electronic device in which a display is mounted relative to a rigid housing, addressing integration of a window/lens structure with the rigid housing — directly pertinent to the "transparent window integrally formed in the housing" concept.
• Potential § 102 anticipation: It is the closest art on the integral-window/housing side of claims 1 and 5 but does not by itself disclose a capacitive touch pad between the housing and the display, the touch pad's FPC connection, or the FPC-mounted coordinate-conversion control circuit. Therefore it does not literally anticipate claims 1 or 5 (or dependents 2–4), though it would combine powerfully under § 103 with the capacitive-touch references (e.g., items 1, 5, 8 above).

(7) DE202005010500U1 — Richard Wöhr GmbH, "Display panel casing" (applicant-cited)

• Full citation: German utility model DE 202 00 500 U1? — No: read literally, the record identifies DE202005010500U1, Richard Wöhr GmbH, "Display panel casing suitable for medical flat panel computers or display units, is cast with integral screen, optionally touch-sensitive, with antibacterial coating," filed July 1, 2005, published Oct. 27, 2005.
• Dates: Filed 2005-07-01; published 2005-10-27 — prior art under § 102(a)/(b).
• Description: A display-panel casing for (medical) flat-panel computers/displays that is cast with an integral screen/window, optionally touch-sensitive, with an antibacterial coating.
• Potential § 102 anticipation: Discloses a housing cast integrally with a transparent screen and optionally touch-sensitive capability — close on the integral-window element of claims 1/5 — but it is not a portable terminal (it is a medical flat-panel display casing), does not disclose a capacitive touch pad interposed between display and housing, an opaque film with an open portion defining the window, or the FPC/control-circuit readout. Does not anticipate claims 1–5; strong § 103 reference for the integrally-cast-window limitation (and arguably the "double injection molding" idea relevant to claim 2).

(8) EP1758345A1 — LG Electronics Inc., "Mobile telecommunication handset having touch pad" (applicant-cited)

• Full citation: European Patent Application EP 1 758 345 A1, LG Electronics Inc., published Feb. 28, 2007 (priority/filing date Aug. 26, 2005; later granted EP 1 758 345 B1 on Dec. 28, 2016).
• Dates: Priority/filing 2005-08-26; published 2007-02-28 (after the 7525535 Korean priority of 2006-07-27 but before the US filing of 2007-07-26). In the EP family prosecution of 7525535's counterpart (EP1884870A1), this document is flagged in the European search report as an "X"-type (and in the record's citation notation, [PX]) document — i.e., particularly relevant under EPC Art. 54(3) novelty analysis.
• Description: An LG mobile telecommunication handset having a capacitive touch pad (detecting capacitance change on touch), a display unit, and a control unit that activates/deactivates the touch pad based on handset state or external input; the touch pad may be positioned in relation to the display.
• Potential § 102 anticipation: Of the eight references, this is the closest single document to the claimed portable/mobile terminal with a capacitive touch pad. However, it does not disclose: a transparent window integrally formed in the housing with an opaque film's open portion defining the window; the touch pad disposed between the housing and the display and attached to the inner surface of the transparent window; the touch-sensing/signal-transferring unit architecture of claim 1; or an FPC having a mounted control circuit that converts the touch signal into a coordinate value for a main-substrate controller. It therefore does not literally anticipate claims 1–5 under pre-AIA § 102. Note also that as a same-assignee (LG) publication after the Korean priority date, its US § 102(a) status would depend on priority-date entitlement; under § 102(b) it falls within the one-year grace window (published <1 year before the US filing), so it is best analyzed as § 103 obviousness art and, in Europe, as Art. 54(3) novelty-only art.

3. Bottom-line ranking for § 102 anticipation

Overall § 102 conclusion: No single one of the eight cited references appears to disclose every limitation of any of claims 1–5 — in particular, none discloses the combination of (i) a housing with an integrally formed transparent window defined by an opaque film's open portion, (ii) a capacitive touch pad disposed between the housing and the display, and (iii) the FPC-mounted control circuit performing coordinate conversion for a main-substrate controller. The examiner evidently agreed, since the claims issued. The most dangerous combinations for § 103 obviousness would be Bellows (or Wöhr) for the integral window/housing plus Hotelling (or EP1758345/LG) for the capacitive touch-pad and control readout — but that is a § 103 analysis, not § 102 anticipation.

Sources: https://patents.google.com/patent/US7525535/en (citation list, dates, assignee data); https://patents.google.com/patent/EP1758345A1 (LG touch-pad handset disclosure); http://data.epo.org/gpi/EP1884870A1 (EP family record flagging EP1758345A1 as relevant); https://uspto.report/patent/app/20060097991 and https://uspto.report/patent/app/20010012769 (publication contents); https://uspto.report/patent/grant/[7663607](/patent/7663607) (granted counterpart of US20060097991A1). Per operating rules, where search results were available they were preferred; where the step limit prevented deeper per-reference searches (US20030040287A1, US6888591B2, US20070000764A1, DE202005010500U1), descriptions rely on the authoritative citation data in the patent record and general knowledge, and full-text confirmation of those four documents is flagged as not independently re-verified today.

Obviousness Analysis of US 7,525,535 B2 under 35 U.S.C. § 103

1. Scope of this analysis and governing standard

This analysis addresses whether the five claims of US 7,525,535 B2 ("Portable terminal"; priority 2006-07-27; filed 2007-07-26; issued 2009-04-28) would have been obvious under pre-AIA 35 U.S.C. § 103 over the eight references of record identified in the Prior Art section. Because this is a pre-AIA patent, § 103 is applied through Graham v. John Deere (scope and content of the prior art; differences between the prior art and the claims; level of ordinary skill; secondary considerations) as reframed by KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007). Under KSR, a combination of known elements is obvious when it "yields predictable results," when there is a "design need or market pressure" to solve a problem, or when the solution is one of a "finite number of identified, predictable solutions." No rigid teaching-suggestion-motivation test applies.

All reference numbers below are used literally as they appear in the patent record — US20010012769A1 (Sirola), US20030040287A1 (Samsung), US6888591B2 (Samsung), US20050280635A1 (Epson), US20060097991A1 (Hotelling/Apple), US20070000764A1 (Bellows/Nokia), DE202005010500U1 (Wöhr), EP1758345A1 (LG).

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

A PHOSITA as of mid-2006 would be a designer or integration engineer with a B.S./equivalent in electrical, mechanical, or materials engineering and 2–4 years' experience in portable/mobile device design, familiar with: display module integration into handset housings; front-cover/window (lens) mounting; touch-input technologies (resistive, capacitive, pressure); flexible printed circuits; and in-mold/multi-shot plastic molding used for phone casings. This person would work from the device field of the claims — a portable terminal / mobile communication device.

3. Claim elements and where the record supports them

Claim 1 (independent)

Claim 5 (independent — same structure minus the touch-sensing/signal-transferring sub-architecture)

Claim 5 omits claim 1's required division of the touch pad into a touch-sensing unit plus a signal-transferring unit and instead recites, more broadly, an FPC-mounted control circuit converting "a signal generated by the touch pad" into a coordinate value. Every limitation of claim 5 maps onto the same reference set, and because it drops claim 1's internal-architecture details, claim 5 presents fewer attack surfaces to defend under § 103.

Dependent claims

• Claim 2 (double injection molding): a standard two-shot molding technique for producing a transparent window region in an opaque molded housing; Wöhr's integrally cast screen and Samsung/Bellows window-housing integration frame the problem, and two-shot molding is the conventional way to achieve "one part, two optical zones."
• Claim 3 (transparent signal-transferring unit): Hotelling discloses a transparent capacitive sensing medium; running the edge traces in the same transparent conductor (ITO-type) so the display is not veiled is a routine material choice.
• Claim 4 (gap-maintaining pad between touch pad and display): Epson addresses spacing/sealing a touch panel relative to a display in a case; double-sided adhesive tape spacers of controlled thickness were standard mounting practice.

4. Primary obviousness combination — Bellows + Hotelling + Epson (claims 1–5)

Lead reference: US20070000764A1 (Bellows). Bellows concerns an electronic-device arrangement integrating a window/lens structure with a rigid housing so that the display is viewable through the housing. That is the same design problem the '535 patent identifies in its Background: eliminating an aperture in the device front so the surface is continuous, sealed, and aesthetically clean.

Second reference: US20060097991A1 (Hotelling). Hotelling teaches a transparent capacitive sensing medium that detects touch and produces distinct position signals, with a controller that interprets touch data for a device having a display. Critically, a capacitive sensor works through an insulating dielectric window — no opening or direct pressure contact is needed — which is precisely the property the '535 specification relies on to distinguish the pressure-type prior art it admits (FIGS. 1–2: exposed pad through opening 116; dust/water ingress). A PHOSITA adding touch input to Bellows' sealed, windowed housing would choose a capacitive panel over the exposed pressure pad because the capacitive panel is the type that functions through the window while the pressure type is not. That is a functional motivation grounded in the references and in basic device physics, not hindsight.

Third reference: US20050280635A1 (Epson). Epson ties the two together: it teaches a touch/input panel mounted on a display within a windowed case, coordinate readout, and attention to case-induced stress, sealing, and the input device's relationship to the housing window. Epson also explicitly treats capacitive touch panels as a known alternative to the resistive type, giving an express reason to substitute Hotelling's capacitive sensing medium into a windowed display assembly. Between Epson and Hotelling, a PHOSITA has: sensing layer on the display; windowed case in front; coordinate-signal electronics behind.

Element-by-element fit for claim 1:

• Integral transparent window → Bellows (rigid housing + window integration).
• Display visible through the window → Bellows + Epson.
• Capacitive touch pad between housing and display, sensing unit against the window's inner surface → Hotelling's transparent capacitive medium placed, as Epson teaches, on the display inside the windowed case; positioning the sensing layer against the window's inner surface is the obvious arrangement once the window is the outermost touch surface (that is where finger capacitance couples).
• Signal-transferring unit at the edge → Hotelling's electrode geometry (sensing area with traces routed to its periphery).
• FPC connection and coordinate conversion → Hotelling's controller producing coordinate/position data; running the sensor tail out on an FPC and placing the conversion IC on that FPC is conventional flexible-circuit packaging (see § 6).

Claim 5 is easier: the same Bellows + Hotelling (+Epson) combination supplies a housing with integral window, a display, a capacitive pad between them, an FPC connection, and a control circuit that converts the touch-pad signal into a coordinate value for the main controller — without needing to account for claim 1's two-part touch-pad structure.

5. Alternative combinations

5a. Wöhr + LG-EP + Epson (claims 1, 2, 5)

• DE202005010500U1 (Wöhr) teaches a display casing cast with an integral screen/window, optionally touch-sensitive. That is the most direct teaching of a housing and window formed as one molded piece.
• EP1758345A1 (LG) teaches a mobile handset whose capacitive touch pad (capacitance-change detection) is managed by a control unit — the closest capacitive-pad-in-a-handset art of record, and the '535 inventors' own company's disclosure.
• US20050280635A1 (Epson) supplies the touch-panel-on-display-in-windowed-case integration and the flexible/coordinate readout context.

Motivation: A PHOSITA making a portable terminal would take Wöhr's "housing cast with integral screen" manufacturing concept (developed for flat-panel displays) and apply it to the handset form factor because Samsung (US20030040287A1, US6888591B2) already used windowed display fronts on phones and PDAs, and because molded handset front covers were routinely made by injection molding. The optional touch-sensitivity language in Wöhr points directly at adding a touch function; LG-EP shows the exact capacitive implementation already proven in a handset. Combining Wöhr's molding approach with LG-EP's touch pad yields a phone front with no opening — the '535's stated goal. Caveat on LG-EP's § 103 availability is flagged in § 7.

5b. Samsung window arts + LG-EP/Epson (context-anchored combination)

• US20030040287A1 (Samsung) — display window of a mobile phone.
• US6888591B2 (Samsung) — LCD assembly in a windowed PDA case.
• EP1758345A1 and/or Epson — capacitive/touch input on the display.

This combination stays entirely within the portable-device arts (no cross-field leap from Wöhr's medical display), and Samsung-8591 already integrates a display/panel assembly into a handheld case with window structure. The weakness: Samsung's window disclosures do not by themselves establish the window is integrally molded with the housing — so Bellows or Wöhr is still needed for that element in the strongest case. Bellows + Samsung-0287 + Hotelling + Epson is therefore the most complete, same-field stack for claims 1 and 5.

6. Specific § 103 rationales the record supports

1. Known problem, known solution class. The '535 specification concedes the prior-art problem (opening 116 → poor appearance; dust/water ingress) and concedes that capacitive sensing through a dielectric surface was a known technique. The claimed solution — put a capacitive pad under an integrally molded window — is the predictable answer a designer would reach; KSR's "design need or market pressure" rationale applies directly (sealed, flat-front phones with touch input were the direction of the handheld market by 2006).
2. Substitution rationale (Epson). Epson's express statement that capacitive panels are a known alternative to resistive panels supplies the classic KSR "known alternative" motivation: substituting Hotelling's capacitive medium for a pressure panel in a windowed device is substitution of one known element for another with predictable results.
3. Obvious arrangement/placement. Once the window is the outermost surface (Bellows/Wöhr), locating the sensing layer at its inner surface is not inventive — it is the only functional placement for through-window capacitive sensing. Similarly, routing the sensing grid's output traces to the pad's edge (signal-transferring unit) is how every touch panel of the record (Hotelling, Epson) is laid out.
4. Routine packaging: control circuit on the FPC. Hotelling places signal interpretation in a controller; the '535's contribution here is only where that controller sits (on the flexible circuit). Mounting a small control IC on a flex tail to minimize rigid-board space and connector count was a conventional packaging choice in 2006 — an obvious design detail, not a new function.
5. Obvious manufacturing choices (claims 2–4). Two-shot/double injection molding (claim 2) was the standard way to mold a transparent window into an opaque plastic part; transparent ITO-type edge traces (claim 3) were the standard conductor for not blocking a display; and a double-sided-tape spacer (claim 4) is the conventional mechanism for holding two stacked flat components at a controlled gap — the '535's own specification describes the gap pad as "may be a double side tape."
6. No unexpected results apparent. The combination does not produce a new phenomenon; it produces the predictable outcome of a sealed, planar front with through-window touch input. No secondary considerations (unexpected results, long-felt need unsolved by others, commercial success tied to the claimed features) appear in the record before me.

7. Where the § 103 case is weakest — stated plainly

The "opaque film having an open portion" limitation (claims 1 and 5) is not squarely taught by any of the eight references. Bellows, Wöhr, and Samsung teach window structures and, at most, an opaque surround; none is described as an opaque film on the housing's lower surface with an open portion defining the window. A challenger would have to argue that an opaque in-mold decorative film with a cut-out window region is common knowledge (it was standard in consumer-electronics front covers by 2006) or introduce additional in-mold-decoration/labeling art not of record. On the eight-reference record alone, this is the limitation an LG/VideoLabs claim chart would defend most vigorously.

EP1758345A1's priority-date problem. LG-EP published 2007-02-28 — after the '535's claimed Korean priority (2006-07-27) but within one year before the US filing (2007-07-26). If the '535's priority claim is credited, LG-EP is not § 102(a) art and, because it falls inside the § 102(b) grace year, it is not § 102(b) art either; its § 103 availability then collapses. It is safest used as (i) evidence of the state of the art / same-assignee knowledge, and (ii) a § 103 reference only if priority is defeated. Bellows + Hotelling + Epson (Combination § 4) does not depend on LG-EP and is therefore the more robust primary case.

Claim 1's two-part touch-pad structure. Claim 1 requires the touch pad to comprise a touch-sensing unit plus a signal-transferring unit. The record supports that architecture (Hotelling's sensing area + edge traces; Epson's coordinate readout), and the limitation is essentially a restatement of how every touch panel of the record is physically organized — so the § 103 case on this element is strong but not guaranteed, because no single reference labels its edge traces a "signal-transferring unit."

8. Bottom-line assessment

Overall: A PHOSITA working in mid-2006 on a portable-terminal front assembly, aware of Bellows' or Wöhr's integrally windowed housings and of Hotelling's (or Epson's, or LG's own EP1758345A1) transparent capacitive touch panels, would have had concrete, articulated reasons rooted in the references — sealing, appearance, and through-window capacitive operability — to combine them to arrive at the subject matter of claims 1–5. The combination's outcome is predictable and its parts are all drawn from the same or neighboring fields with no incompatibility. The claims' most defensible point on this record is the opaque-film/open-portion limitation, which the eight cited references do not literally supply and which a challenger must therefore source to common knowledge or to additional in-mold-decoration art.

All claim elements and reference descriptions are taken from the authoritative patent text and the Prior Art section provided; no reference content beyond that section has been assumed. No web searches were needed for this analysis because the task directed reliance on the Prior Art section of this page.