US 8862757

I'll search for authoritative information on US 8862757, including USPTO records and any CAFC 2026 docket activity.

Let me check for any CAFC 2026 docket activity and the current litigation/reexamination status.

Search scope and caveat

I searched for the exact number 8862757 (US 8,862,757 B2) and did not substitute or auto-correct it. Note two limits on my results:

• I do not have direct authenticated access to USPTO PatentCenter, PACER, or the Federal Circuit's own docket system. I relied on the Google Patents full text you supplied plus publicly indexed USPTO/PTAB/assignment documents and litigation-tracker pages.
• I found no CAFC 2026 docket or appeal that specifically names U.S. Patent 8,862,757. The Federal Circuit activity I could locate relating to CellSpinSoft involves other patents in the family (e.g., the Garmin Alice line, which reached the Supreme Court as No. 19-400, and Cellspin Soft v. Nikon, Fed. Cir. Case 22-2032, involving US 9,749,847 and siblings). I cannot confirm any 2026 Federal Circuit proceeding on the '757 patent itself. Treat any assertion of a 2026 CAFC docket for '757 as unverified.

Everything below is grounded in the patent text you provided and the accompanying records.

Bibliographic summary

Sole inventor/assignee details are corroborated by the USPTO assignment record (Patent Assignment 32854/625, executed Dec. 3, 2012, recorded May 9, 2014, to CellSpinSoft Inc.).

Abstract

The patent discloses a method and system for using a digital data capture device (digital camera, video camera, etc.) together with a Bluetooth (BT)-enabled mobile device to publish data and multimedia content to one or more websites automatically or with minimal user intervention. A client application on the mobile device detects captured data, multimedia content, and associated files on the data capture device (which is physically separate), initiates/accepts a BT transfer, and then automatically publishes the transferred content to websites selected via user preferences and timer settings. The BT connection is established by pairing a BT communication device on the capture device (in-built chip, BT memory card, or external BT device) with the mobile device.

Plain-language overview of the independent claims

All four independent claims are directed to segmented file transfer from a Bluetooth-enabled mobile device to a web service — i.e., splitting a file into pieces at the application layer, labeling them, sending them to a web service, getting acknowledgments, and handling an interrupted transfer by re-synchronizing. (This is a different claim set from the older "capture-and-publish" family members; the '757 claims are the segmented-upload/error-recovery claims.)

Claim 1 — Method with a software module on the mobile device. The software module: (a) determines the file's size; (b) segments the file into data segments at the application layer (layer 7 of OSI / the Internet protocol suite), where segmentation is driven in part by file size and the device's data-transfer capabilities; (c) applies a segment identifier to each segment at the application layer; (d) applies a user identifier that uniquely identifies a particular user of the destination web service, at the application layer; (e) transfers each segment with its identifiers, configuring it so the web service can receive it and reassemble it using the segment identifiers; (f) receives a reply message confirming successful transfer; (g) repeats until all segments succeed. If the transfer is interrupted, the module sends an application-layer synchronization request after the connection is restored asking what the web service already received for that user identifier, receives a synchronization reply, and resumes the transfer based on that reply.

Claim 8 — Same method, without the "software module" framing. Substantively the same steps as claim 1, phrased as the Bluetooth-enabled mobile device itself performing the determining, segmenting (application-layer), labeling with segment/user identifiers, transferring with replies, and the interruption/re-sync/resume behavior.

Claim 15 — Two-part (metadata + payload) segmentation method with a software module. The file is segmented into a first data segment containing data associated with the file data (at least one of file name, file size, or file type) and a second data segment containing the file data itself. The module applies the user identifier to the first segment, transfers it, and receives a reply; then applies the user identifier to the second segment, transfers it, and receives a reply. If the second segment's transfer is interrupted, the module sends an application-layer synchronization request, receives a synchronization reply about what the web service received, and resumes by creating new segment(s) for the remaining data, applying segment identifiers and the user identifier, and transferring them (configured for receipt and reassembly).

Claim 21 — Same two-part method as claim 15, without the "software module" framing, phrased as the Bluetooth-enabled mobile device performing the steps.

Dependent claims (2–7, 9–14, 16–20, 22–26) add: associated-data = file name/size/type; file data = audio, video, image, text, or digital data; user identifier = user-name, password, device information, settings, or preferences; transfer capability tied to the limited cellular-network/processing capability of the mobile device; application layer = OSI layer 7 or the Internet protocol suite application layer; and segment identifier = content range of the file data in the segment.

Related family (same specification/priority)

The '757 patent is one of a large continuation family claiming priority to 2007-12-28, including US 8,392,591; 8,700,790; 8,756,336; 8,738,794; 8,758,336; 8,798,539; 8,898,260; 8,892,752; 8,904,030; 9,226,138; 9,258,698; 9,319,870; 9,749,847; 9,900,766; 10,425,806; 11,234,121; 11,659,381; and 12,058,779.

Post-grant challenges and litigation (context, not CAFC 2026)

• Ex parte reexamination 90/019,488 was requested April 17, 2024 and granted July 15, 2024 (Art Unit 3992), finding a substantial new question of patentability affecting claims 1–26 of the '757 patent. Requested by Unified Patents; consistent with Unified's published statements that the '757 and '260 claims are directed to segmented-packet uploading and transmission-error handling.
• IPR2024-00759 (TikTok Inc. v. CellSpin Soft, Inc., patent 8,862,757) was filed April 1, 2024 and instituted Sept. 30/Oct. 1, 2024, alongside six sibling IPRs. After sua sponte Director Review (June 5, 2025) and the informative YMTC decision (Jan. 15, 2026), the Director authorized supplemental briefing (Jan. 23, 2026) on real-party-in-interest and the announced TikTok USDS Joint Venture. A tracker page lists the case status as Institution Denied, with an institution decision date of March 30, 2026 — consistent with a Director Review decision vacating institution. I could not independently verify the final text of that March 30, 2026 order, so treat the precise disposition as uncertain.
• District court: Cellspin Soft, Inc. v. ByteDance Ltd. et al., No. 2:23-cv-00496-JRG-RSP (E.D. Tex.) asserted the '757 patent (among others); the case was stayed Jan. 26, 2025 pending the IPRs. Google Patents also lists related E.D. Tex. cases 2:23-cv-00227 (Panasonic) and 2:23-cv-00496.
• Assignee encumbrances: numerous security interests recorded July 27, 2018 in favor of individuals (McSweeney, Khan, Akella, Williams, Klein, Kessinger, Silverman, Lin, Kastelic, Virmani, Singh).

Bottom line

US 8,862,757 is a CellSpinSoft continuation patent (Singh/Klein/Laviano) issued Oct. 14, 2014 from application 14/273,546, claiming priority to Dec. 28, 2007. Although its specification and abstract describe Bluetooth camera-to-phone automatic publishing, its 26 claims are directed to application-layer segmented file transfer with per-segment user/segment identifiers, acknowledgment replies, and interruption re-synchronization/resume. It has been subject to a granted ex parte reexamination and multiple IPRs, and was asserted against ByteDance/TikTok.

Explicit uncertainties: (1) I could not verify a CAFC 2026 docket for 8,862,757 — none appeared in my searches; (2) the exact March 30, 2026 IPR2024-00759 disposition should be confirmed against the PTAB's own record; and (3) the anticipated expiration date and current reexamination outcome are drawn from third-party/patent-office summaries and should be confirmed against official USPTO records.

I'll research the litigation history of US patent 8862757, starting with the patent-specific sources.

Let me get more specifics on each identified case and confirm which asserted the '757 patent.

Litigation Involving U.S. Patent No. 8,862,757

Patent snapshot. U.S. Pat. No. 8,862,757 ("Automatic multimedia upload for publishing data and multimedia content") issued Oct. 14, 2014 from application 14/273,546 (filed May 9, 2014), claiming priority to Dec. 28, 2007. Original/current assignee: CellSpinSoft Inc. Inventors: Gurvinder Singh, Marcos Klein, Vince Laviano. It is one of a large continuation family (including 8,392,591; 8,700,790; 8,756,336; 8,738,794; 8,898,260; 8,904,030; 9,900,766; 10,425,806; 11,234,121; etc.) that Cellspin has asserted against many defendants. Claim 1 is directed to segmented file transfer from a Bluetooth-enabled mobile device to a web service (size determination, application-layer segmentation, segment/user identifiers, per-segment reply messages, and synchronization/resume after interruption).

Below I separate (A) matters I could confirm name the '757 patent from (B) related matters I could not confirm and (C) matters that do NOT involve '757.

A. Matters confirmed to involve US 8,862,757

1. Cellspin Soft, Inc. v. Panasonic Corporation et al.

Confirmed via the USPTO AO 120 filing for the case, which lists "8,862,757 / 10/14/2014 / CellSpinSoft Inc" among the patents included. (Cited by Unified Patents as the "previously against Panasonic" assertion of the '757/'260 patents.)

2. Cellspin Soft, Inc. v. ByteDance Ltd. et al. (TikTok)

Confirmed: Docket Alarm's docket tags for 2:23-cv-00496 list 8862757 among the asserted patents, and Unified Patents' own release states CellSpinSoft "asserted these patents against ByteDance (TikTok)."

3. Patent Trial and Appeal Board — TikTok Inc. et al. v. Cellspin Soft, Inc.

Related Cellspin IPRs filed alongside this one (same petitioner) are IPR2024-00757, -00759, -00760, -00767, -00768, -00769, -00770/00778, and a joint conference call on those proceedings was held March 18, 2025.

B. Related matters I could NOT confirm involve the '757 patent (flag for verification)

• Cellspin Soft, Inc. v. Fossil Stores I, Inc. et al., No. 2:25-cv-00683 (E.D. Tex., filed July 3, 2025; Judge Gilstrap; defendants Fossil Stores I, Inc. and Fossil Group, Inc.; plaintiff's counsel Garteiser Honea; defense Fish & Richardson). Reporting describes three Bluetooth data-transfer patents asserted, but the specific numbers were not disclosed in the sources I retrieved. A Sept. 2026 report indicates the court declined to dismiss the case. '757 membership unconfirmed.
• Cellspin Soft, Inc. v. Garmin Corporation, No. 2:25-cv-00950 (E.D. Tex., filed Sept. 15, 2025; Judge Gilstrap). Motion-to-dismiss briefing through 2026; patent numbers not confirmed in the sources retrieved.

C. Matters that do NOT involve the '757 patent (avoid confusion)

• Cellspin Soft, Inc. v. SZ DJI Technology Co., Ltd. et al., No. 2:25-cv-00949 (E.D. Tex., filed Sept. 15, 2025). Asserted patents are reported as 9,900,766; 10,425,806; and 11,234,121 — not '757.
• The earlier (2017–2019) Cellspin campaign — Cellspin Soft, Inc. v. Panasonic/Garmin/Fitbit/Under Armour, et al. (N.D. Cal.), the resulting appeals (Cellspin Soft, Inc. v. Fitbit LLC, No. 22-2025, Fed. Cir. Nov. 1, 2024), and Garmin USA, Inc. v. CellSpin Soft, Inc., S. Ct. No. 19-400 — concerned other family members (notably U.S. 8,738,794; 8,752,126/8,756,336; and 9,258,698), not the '757 patent.
• The Cellspin Soft, Inc. v. Panasonic Corporation, No. 20-1948 (Fed. Cir. Oct. 14, 2022) appeal was an IPR of U.S. 9,258,698, not '757.

D. Related USPTO proceedings on the '757 patent (not "litigation" but directly on point)

• Ex parte reexamination control 90/019,488 — Third-party request filed April 17, 2024 (requester associated with Unified Patents), challenging claims 1–26 of the '757 patent. Granted July 15, 2024 by the Central Reexamination Unit (Examiner Joshua D. Campbell, Art Unit 3992), finding a substantial new question of patentability based on: Sohn (KR 100537818); Bodic, Mobile Messaging Technologies and Services: SMS, EMS, and MMS; Jin (KR 100608841); Wagner (U.S. 8,385,950); Deshpande (U.S. 7,206,804); and Song (U.S. Pub. 2002/0184383).

Caveats

1. Primary-source verification recommended. The two district-court cases and the IPR are also the three matters hyperlinked on the Google Patents "litigation" panel for US8862757:
   • 2:23-cv-00496 — https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A23-cv-00496
   • 2:23-cv-00227 — https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A23-cv-00227
   • IPR2024-00759 — https://portal.unifiedpatents.com/ptab/case/IPR2024-00759
2. Institution status of IPR2024-00759 conflicts across sources (instituted vs. denied, Mar. 30, 2026). Confirm on the PTAB docket/P-TACTS before relying on it.
3. Date inconsistency: the research prompt states a current date of April 26, 2026, but several retrieved docket/reporting items carry dates later in 2026 (through late September 2026). I have reported the dates as the sources state them; where later-dated material was returned, I treated it as the more current record but flagged it rather than silently harmonizing.
4. I did not find any litigation naming '757 outside the Cellspin/NPE campaign, and I did not find a final judgment or damages award specifically resolving the '757 patent as of the latest records reviewed.

I'll start by hunting for the PTAB proceeding that the patent's own bibliographic data surfaced (IPR2024-00759), then verify whether any others exist.

The patent's own bibliography surfaced IPR2024-00759, and search confirms it's real. Let me pin down the institution decision, panel, grounds, and — critically — the 2026 Director Review outcome.

Good — the picture is coming together. Now let me pin down the petition grounds/art, the institution panel and date, and check for any other IPR on this patent (including the earlier Panasonic litigation and Unified's reexam).

Proceedings overview

Total AIA trials on US 8,862,757: 1 — and it is not on the ODP's radar.
Status breakdown: claims invalidated: 0 / claims sustained: 0 / settled: 0 / institution denied at the threshold: 0 / instituted, then vacated and petition denied: 1 (IPR2024-00759).

⚠️ Flag — the structured "PTAB proceedings on file" block is stale and wrong. ODP reports no AIA trial proceedings for this patent. That is contradicted by the patent's own Google Patents bibliography, which carries an embedded litigation link to IPR2024-00759 ("PTAB case IPR2024-00759 filed (Pending - Instituted)," Petitioner field blank), and by the primary record: TikTok Inc. filed IPR2024-00759 against the '757 patent, the Board instituted trial on 2024-09-30, and on 2026-03-30 the Director vacated institution and denied the petition. Do not rely on the ODP feed for this patent; verify in PTAB E2E.

Defensive posture: This is not a hardened patent and it is not a dead one. All 26 claims (1–26) remain live — no FWD ever issued, so nothing was canceled and nothing was sustained on the merits. The single IPR against it was killed on petitioner-standing grounds (foreign-government RPI under Return Mail / Tianma), not because TikTok's §103 art failed. A defendant today gets no §315(e)(2) estoppel shield and no canceled claims to point at, but also inherits no adverse merits precedent — the PTAB has never adjudicated these claims. The more consequential live threat to the claims is the pending ex parte reexamination 90/019,488 (Unified Patents), which the CRU granted on 2024-07-15 over all of claims 1–26.

IPR2024-00759 — TikTok Inc. v. CellSpin Soft, Inc.

• Type: Inter Partes Review (AIA, 35 U.S.C. § 311)
• Filed: 2024-04 (petition accorded a filing date in early April 2024; the exact 00759 filing date is not shown in the sources reviewed — companion petition IPR2024-00757 was filed 2024-04-01). One of seven parallel TikTok petitions: IPR2024-00757 ('336), 00759 ('757), 00760 ('260), 00767 ('381), 00768 ('121), 00769 ('766), 00770 ('030).
• Status: Verbatim from the structured data as embedded in the patent record: "PTAB case IPR2024-00759 filed (Pending - Instituted)" — that string is now obsolete. Plain English: instituted 2024-09-30; sua sponte Director Review 2025-06-05; stayed thereafter; institution VACATED and petition DENIED / proceeding TERMINATED 2026-03-30.
• Judge panel: Trial panel of APJs Gregg I. Anderson, Cynthia M. Hardman, and Michael A. Valek (panel listed on the scheduling order in companion IPR2024-00760; Judge Hardman conducted the 2025-03-18 conference call across all seven proceedings "joined here by Judges Anderson and Valek"). The terminating decision was issued by Director John A. Squires under 37 C.F.R. § 42.75(b) / Arthrex.
• Petition grounds: Challenged claims 1–26, all under § 103, via the Traynor declaration:
  • Ground 1 — Aaltonen (US 2005/0209927) in view of Drescher (PCT publication; Board treated it as pre-AIA § 102(e) art as of its 2006-09-07 international filing date).
  • Ground 2A — Takahashi (JP 2005-303511) in view of Na (US 2006/0129631).
  • Ground 2B — Takahashi + Na + Lind (WO 2005/109781).
  • CellSpin's Preliminary Response also argued Fintiv § 314(a) denial, and that "Petitioner's primary reference [was] unavailable for use as prior art," plus non-combinability and missing claim limitations. TikTok filed a Sotera stipulation that defeated the Fintiv argument.
• Institution decision: Instituted 2024-09-30 (Paper 8), expressly "for all of the challenged claims." Reasoning: Claim 1 was reasonably likely obvious over Aaltonen + Drescher (Ground 1), and the showing for claims 2–26 was also sufficient; the Board held it "need not determine whether Petitioner has also shown a reasonable likelihood of prevailing on its challenges in Grounds 2A–B," giving only "initial skepticism" as guidance. The Board rejected CellSpin's argument that Drescher was not prior art.
• Final Written Decision: None. No FWD issued and none ever will in this proceeding. The statutory FWD deadline (12 months from the 2024-09-30 institution, i.e., ~2025-09-30) was dissolved by the 2025-06-05 stay and then mooted by termination. Claims 1–26 were neither canceled nor sustained — the PTAB never reached the merits.
• Settlement / termination: Not a settlement. Terminated on Director Review, 2026-03-30 (Paper 42, Director Squires), "Vacating the Decisions Granting Institution and Denying Institution of Inter Partes Review." Chain of events:
  1. 2025-06-02 — Board denied CellSpin's motion to terminate (Paper 33), holding (a) CellSpin waived the RPI issue by not raising it in its Patent Owner Response, (b) even if the CCP were an unnamed RPI, the remedy is not termination, and (c) Return Mail addressed U.S. federal agencies, not foreign governments.
  2. 2025-06-05 — then-Acting Director Stewart initiated sua sponte Director Review (Paper 34) and stayed all seven IPRs.
  3. 2026-01-15/16 — informative YMTC v. Micron decision; 2026-01-23 — order authorizing supplemental briefing (Paper 38) in light of YMTC and TikTok's announced TikTok USDS Joint Venture LLC restructuring.
  4. 2026-03-18 — precedential Tianma Microelectronics v. LG Display, holding a foreign government is not a "person" that may petition in an IPR.
  5. 2026-03-30 — Director Squires applied Tianma: because CellSpin put RPI status "into dispute" with substantial evidence, the burden shifted to TikTok, which elected not to submit any rebuttal evidence. "Petitioner failed to carry its burden to establish that a foreign government was not an RPI at the time of its petition... the decisions granting institution are hereby vacated, the Petitions are denied, and these IPRs are terminated." The orders joining LifeScan, Senseonics, and Ascensia to IPR2024-00768/-769/-770 were also vacated; the Board was directed to decide independently whether IPR2025-00102/-103/-104 should be instituted. (Those three later petitions target other CellSpin patents, not '757.)
• Appeal: None to the Federal Circuit. Because no FWD issued, there is no appealable final agency action on the merits. Whether the Director's vacatur/denial is itself appealable by TikTok is an open question; nothing in the sources reviewed shows a CAFC appeal.
• Defensive value: Mixed and important not to over-read. On the one hand, no claim of the '757 patent has been canceled, so any demand letter asserting claims 1–26 is not "sanction-bait" on PTAB grounds. On the other hand, no claim has been affirmed as patentable, and the IPR has zero preclusive or estoppel effect: § 315(e)(2) estoppel attaches only to "an inter partes review... that results in a final written decision," and no FWD issued. A new defendant is free to file a fresh IPR on the same Aaltonen+Drescher / Takahashi+Na+Lind art. What TikTok got is the opposite of a merits win: the Board signaled at institution that claim 1 was likely obvious over Aaltonen+Drescher.

Related non-AIA Office proceeding (same patent, worth tracking)

Ex parte reexamination 90/019,488 — Unified Patents (third-party requester) v. CellSpin Soft. Requested 2024-04-17; granted 2024-07-15 by the CRU (Art Unit 3992, Examiner Joshua D. Campbell), finding a substantial new question of patentability affecting claims 1–26 of the '757 patent. This is not an AIA trial and confers no § 315 estoppel, but it is the only Office proceeding currently examining the merits of these claims and the likely near-term source of any claim cancellation. Companion Unified reexams were granted on '260 (90/019,499, 2024-07-25), '030 (90/019,499-adjacent, 2024-07-25) and '381 (90019507, 2024-08-02). It is also the reason CellSpin's Fintiv/POPR argument failed to knock out the TikTok IPR.

Strategic summary

Claim status on US 8,862,757. Canceled: none. Sustained: none. Untested at the PTAB: claims 1–26 — all of them. The only claim-level adjudication anywhere in the Office is the reexamination grant (§ 90/019,488), which is a finding of SNQ, not a rejection on the merits; final claim status there is unknown. Practically, a defendant today must treat claims 1–26 as fully live, with the independent claims being 1, 8, 15, and 21 (each reciting the segmented-transfer / synchronization-resume architecture: application-layer segmentation, segment identifiers, user identifiers, per-segment reply messages, and sync-request/sync-reply resumption after interruption).

Estoppel landscape. No IPR estoppel applies to anyone. Because IPR2024-00759 produced no final written decision, § 315(e)(2) never triggered — not for TikTok, not for its privies, and not for a subsequent defendant. The prior art is entirely unburdened: Aaltonen (US 2005/0209927), Drescher's PCT publication, Takahashi (JP 2005-303511), Na (US 2006/0129631), and Lind (WO 2005/109781) remain available in a fresh IPR, in district court, or in the ITC, with no estoppel overlay. Two caveats cut the other way: (1) TikTok itself is now time-barred under § 315(b) (complaint served 2023-10, one-year bar long expired) and its petitions were denied and terminated, so it cannot re-petition; (2) any new petitioner must contend with discretionary denial pressures — the parallel E.D. Tex. litigation has resumed post-termination, and § 325(d) could be invoked if the Board sees the same art it already evaluated at institution. Note that the strongest CellSpin-side lever in this saga was procedural, not substantive, and it is now precedent: Tianma (precedential, 2026-03-18) plus YMTC (informative) mean any petitioner with foreign-sovereign ownership exposure should expect a hard RPI/standing fight — TikTok lost notwithstanding an eleven-month wait for the Director.

Pattern signals. (a) One petitioner, one patent — no repeat filer on '757: TikTok filed one IPR against '757 as part of a coordinated seven-patent campaign against CellSpin; there is no second IPR on the '757 patent. (b) A defensive aggregator is in the chain, just not in an IPR: Unified Patents attacked '757 through ex parte reexamination (90/019,488) rather than an AIA petition — consistent with Unified's post-Fintiv reexam-first strategy against this portfolio, and Unified's in-house counsel (Mansinghani, Holtslander, Marks) are on the filings. (c) The patent owner litigates aggressively and litigates to stay: CellSpin asserted the '757 patent in CellSpin Soft, Inc. v. ByteDance Ltd. et al., No. 2:23-cv-00496-JRG-RSP (E.D. Tex., Marshall Div., filed 2023-10-20, Judge Gilstrap), alongside '336, '260, '121, '381, '766, '030, '775 and others; it obtained a stay pending the IPRs (No. 106, 2025-01-27) and, when the IPRs collapsed, litigated the RPI/standing question up to the Director's desk rather than settling or narrowing claims. (d) CellSpin's portfolio has also drawn § 101 attacks in other cases — e.g., the Garmin v. CellSpin appeal that produced a cert petition (No. 19-400) over patent-eligibility of a different CellSpin patent. IPR jurisdiction is limited to §§ 102/103, so § 101/Alice is a defense channel the Board cannot touch.

Recommended next steps

1. Do not rely on the ODP "no proceedings" result. Pull the IPR2024-00759 docket in PTAB E2E and read, in this order: (i) the 2024-09-30 Institution Decision (Paper 8); (ii) the 2025-06-02 Order Denying Motion to Terminate (Paper 33); and (iii) the dispositive 2026-03-30 Director Review decision — Paper 42, Vacating the Decisions Granting Institution and Denying Institution of Inter Partes Review, at https://www.uspto.gov/sites/default/files/documents/ipr2024-00757_etc_tiktok_v_cellspin_soft_03302026_paper42.pdf. The Paper 33 order is reproduced at https://ipwatchdog.com/wp-content/uploads/2025/06/Order-Denying-Motion-to-Terminate-1.pdf.
2. Quote the disposition accurately in any motion or opinion work-product. The operative language is: "the Board's decisions granting institution of inter partes review in the above-captioned proceedings are vacated"; "the Petitions are denied, and no trials are instituted." There is no holding that any claim is patentable — do not let opposing counsel characterize the 2026-03-30 decision as a validity affirmance. Conversely, do not assume you can use it as a stipulated judgment of validity; it has no preclusive effect.
3. Treat claims 1–26 as asserted and un-narrowed. If a demand letter or complaint identifies specific claims, map them: all four independent claims (1, 8, 15, 21) share the "segment identifier" / "user identifier" applied "at the application layer level" limitations that drove the claim-construction fight (CellSpin argued "along with" = "in addition to," and that HTTP headers must be text). Those constructions were briefed and rebutted in the record but never adjudicated by the Board — they are open in district court.
4. Build the invalidity case on the Aaltonen+Drescher and Takahashi+Na(+Lind) combinations yourself, without estoppel concerns. They are unburdened by any FWD. Budget for the two live fights: Drescher's prior-art date (PCT international filing 2006-09-07 vs. the '757 priority date of 2007-12-28) and motivation to combine (Takahashi+Na resumption-of-upload rationale). Re-use the Board's own institution reasoning where it helps you — e.g., the Board rejected CellSpin's argument that Drescher is not prior art.
5. Track the ex parte reexam 90/019,488 as your leading indicator. It is on all of claims 1–26 and was granted on SNQ over the same subject matter. A reexam rejection that issues and is sustained → claims canceled or narrowed; that is your fastest, cheapest path to a narrowed patent. Reexam file histories are public in Patent Center; Unified's portal has the request at https://portal.unifiedpatents.com/exparte/90019548 (and the '757-related request via Unified's portal).
6. Monitor the E.D. Tex. case now that the stay has lapsed (CellSpin v. ByteDance/TikTok, No. 2:23-cv-00496-JRG-RSP). With the seven IPRs terminated on 2026-03-30, the stay predicated on those IPRs should be lifted and the case should return to scheduling — that docket will drive claim-construction positions, § 101 motions, and any renewed settlement posture. Watch also whether TikTok appeals the Director's denial and whether LifeScan/Senseonics/Ascensia prosecute IPR2025-00102/-103/-104, which the Director left to the Board to decide on their own (those concern other CellSpin patents, not '757 — do not conflate them).
7. If you hold foreign-sovereign-linked ownership, front-load your RPI analysis. Tianma + YMTC + this decision form a coherent, aggressive Director-level line: identify all RPIs at filing and marshal affirmative evidence, because once the patent owner puts RPI status "into dispute," the burden shifts and silence is fatal — that is precisely how TikTok lost an already-instituted, fully-instituted trial.

Confidence notes / open items I could not confirm from the sources reviewed: the exact petition filing date for IPR2024-00759 (early April 2024; the companion 00757 date is 2024-04-01); the specific exhibit numbers for the '757 grounds (the exhibit list I found is from the companion '757-related filings in the same proceeding); and the current claim-level status of reexam 90/019,488, which has not yet produced a final certificate. I did not find any PGR, CBM, or second IPR on the '757 patent, any Federal Circuit appeal, or any settlement. If your matter turns on any of those, verify directly in PTAB E2E and the E.D. Tex. docket before relying on the negative.

I'll reconstruct the assignment record using the authoritative patent text plus live searches of USPTO assignment records, litigation dockets, and NPE directories.

Let me dig into the specific reel/frame numbers and the 2018 security-interest recordings.

Let me pin down the 2018 reel/frame numbers, any release records, and the NPE directory listings.

Assignment & Ownership Analysis — US 8,862,757 B2

Scope note. I reconstructed this from (a) the authoritative full text of US 8,862,757 provided, (b) Google Patents legal events, (c) PlainSite's mirror of the USPTO Patent Assignment Search records, and (d) the actual recorded assignment cover sheets filed as exhibits in TikTok Inc. v. CellspinSoft (IPR2024-00759, Ex. 1002). The USPTO Assignment Center at https://assignmentcenter.uspto.gov is a dynamic application that cannot be scraped directly from this environment, so a handful of reel/frame values below are read off the recorded cover-sheet barcodes rather than from a live Assignment Center query — I flag each such instance. Bottom line up front: there is no title transfer to any shell LLC or known aggregator; the patent has been owned by CellSpinSoft Inc. since the inventors' assignment and was pledged as collateral to a syndicate of individual lenders in 2018.

Inventors

Unusual patterns.

• The "inventors depart within 12 months" fire-sale precursor is NOT present. Two of the three inventors (Singh, Klein) were still lenders to and/or officers of CellSpin Soft in 2018 — a decade after the 2007 priority filing. This is a founder-inventor company, not a bolted-on inventor group.
• The title assignment was executed unusually late and recorded unusually late. The inventors' assignment paperwork was executed December 3, 2012 — roughly four years after the Dec. 11, 2008 parent filing — and was recorded 2014-05-09, the exact same day the continuation 14/273,546 was filed (USPTO Assignment 32854/625 per PlainSite). That same Dec. 3, 2012 execution date recurs on the parallel recording against the sibling continuation 14/576,196 (Assignment 34553/37, recorded 2014-12-19), indicating a single nunc-pro-tunc assignment document was re-recorded against each continuation in the family.

Original assignee

CellSpinSoft Inc. — officially listed in the assignment record as "Cellspinsoft Inc."; also styled CellSpin Soft, Inc., a California corporation.

• Address of record (2014): 4423 Fortran Drive, Suite #116, San Jose, CA 95134.
• Address in 2018 security agreements: 1410 Mercy Street, Mountain View, CA 94041.
• Line of business: founded 2006 as a mobile-blogging / automatic-multimedia-upload company; worldwide launch at the DEMO Conference on January 30, 2008. Its own website now brands itself "CellSpin Intellectual Property — Wearable and Mobile Technology Patents Granted," and it has stated that "the past 3 years, the company has been focused on increasing our patent portfolio." (Google Patents / cellspin.net; village.do/company/cellspin.)
• Did it ship a product embodying the claims? Partially, historically. It commercially launched a mobile-blogging application around the 2008 DEMO launch, i.e., a product within the claimed subject matter (pairing a BT capture device to a mobile phone and auto-publishing). However, there is no evidence of any current shipping product; the company's current public-facing activity is patent portfolio management and assertion.
• Current status: operating as a patent-assertion entity (not dissolved, not in bankruptcy). It litigated as plaintiff in N.D. Cal. (2017) and E.D. Tex. (2023), and remains patent owner of record. There is documented financial distress, but no bankruptcy filing: in Cellspin Soft, Inc. v. Fossil Group, Inc., No. 17-cv-05933-YGR (N.D. Cal.), the court granted defendants' ex parte application for a debtor's examination of CellSpin Soft (order dated Nov. 21, 2018) to enforce an attorneys'-fees judgment. That is a judgment-enforcement event, not an insolvency proceeding, and the patents were not sold.

Assignment timeline

Caveat on reel/frame: reel 32854/625 is confirmed via PlainSite's USPTO mirror. The 2018 entries were recorded in the 50502 reel; frames in the ~4500s are read from the cover-sheet barcodes reproduced in IPR2024-00759 Ex. 1002 (confirmed: 50502/4507 and 50502/4562). I could not individually confirm every one of the ~11 same-day reel/frame pairs; where I could not, I have written "reel 50502 (frame not individually confirmed)" rather than guess.

• 2012-12-03 (executed) / recorded 2014-05-09 — Reel 32854/625

  • Conveyance: Assignment of Assignors Interest
  • Assignor: Singh, Gurvinder; Klein, Marcos; Laviano, Vince
  • Assignee: Cellspin Soft Inc. (officially listed as "Cellspinsoft Inc."), 4423 Fortran Drive, Suite #116, San Jose, CA 95134
  • Correspondent: Not captured on the PlainSite abstract; the recording was made contemporaneously with the 2014-05-09 filing of application 14/273,546 (applicant's own prosecution transmittal, docket "CellSpin_04Con9_US", listed "Assignment Papers … Name of Assignee CellSpinSoft Inc.").
  • Context: Founder-to-company assignment, recorded nunc pro tunc against the continuation years after execution — normal clean-up, not a monetization event.

• 2018-07-24 (executed) / recorded 2018-07-27 — Reel 50502 (frame not individually confirmed; EPAS ID PAT5071658)

  • Conveyance: Security Interest (Intellectual Property Security Agreement — short form)
  • Assignor: CellSpin Soft Inc.
  • Assignee (secured party): John W. Kastelic, 715 Flat Shoals Ave SE, Atlanta, GA 30316
  • Correspondent: John W. Kastelic, 715 Flat Shoals Ave SE, Atlanta, GA 30316 — email johnwkastelic@gmail.com, phone 415-516-2605. Flag: Kastelic is the correspondent on every recorded post-issuance document on this patent — and he is simultaneously the secured party. The beneficiary self-filed his own lien.
  • Context: Securitization — portfolio-wide collateral pledge (Exhibit 1 lists 14 patents + app. 15/659,637, including 8,862,757).

• 2018-07-27 (executed) / recorded 2018-07-27 — reel 50502, frames in the ~4500s (EPAS IDs PAT5071311–PAT5071658); confirmed 50502/4507 (Virmani) and 50502/4562 (Lin)

  • Conveyance: Security Interest (identical short-form IP Security Agreements, filed as sequences 1–11+)
  • Assignor: CellSpin Soft Inc. ("CELLSPIN SOFT, INC., a California corporation … 1410 Mercy Street, Mountain View, CA 94041"); signed /s/ Gurvinder Singh, President
  • Assignees (secured parties), all natural persons: Eamonn McSweeney (Ballintubber East, Carrigtwohill, Co. Cork, Ireland); Amir Khan; Ram Akella (Pleasanton, CA); Donald A. Williams (San Ramon, CA); Marcos Klein (inventor); James Bland Kessinger; Neil Silverman (Golden, CO); David C. Lin (Santa Clara, CA); John W. Kastelic (Atlanta, GA); Rajeev Virmani (Hoboken, NJ); Gurvinder Singh (Santa Clara, CA — inventor).
  • Correspondent: John W. Kastelic on all entries (same name/address/phone/e-mail as above). Recurring correspondent across the entire chain.
  • Context: Securitization / financing — these are 2018 perfections of Security Agreements originally dated 2007–2008 (e.g., Virmani 2007-05-10; Lin 2007-09-21; Akella 2007-10-23; Silverman 2008-01-11; McSweeney 2008-01-25). The IP security agreements were only recorded in 2018, i.e., the company collateralized its whole patent family to its long-standing investor/lender group.

• No release, merger, change-of-name, or corrective recording for US 8,862,757 was located. Google Patents' legal-events feed for this patent shows only the 2014-05-09 inventor assignment and the July 2018 security-interest cluster — no transfer of title out of CellSpinSoft.

Timeline diagram

timeline
    title Ownership of US 8862757
    2007 : Priority application filed
    2008 : Product launched at DEMO
    2012 : Inventors assign to Cellspin Soft
    2014 : Continuation filed
         : Assignment recorded reel 32854 625
         : Patent 8862757 issued
    2017 : First infringement suits filed
    2018 : Portfolio pledged to 11 lender parties
         : Security interests recorded
    2018 : Adverse fees judgment and debtor exam
    2023 : Suits against Panasonic and ByteDance
    2024 : IPR and reexam challenges instituted

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT. No licensing-only LLC ever appears as assignee. Title has remained with CellSpinSoft Inc. since Assignment 32854/625 (recorded 2014-05-09) and was never conveyed to an "IP / Holdings / Ventures"-style entity. The 2018 recordings are liens, not conveyances (conveyance type plainly recorded as "SECURITY INTEREST"). Note the inverse finding: the original assignee itself is a non-practicing entity today, so the absence of a shell transfer is not exculpatory — it just means no intermediary was needed.

2. Known asserter in the chain — PRESENT (strong). CellSpinSoft, Inc. is expressly identified as "an NPE" by Unified Patents in its published insight: "U.S. Patent 8,862,757 and U.S. Patent 8,898,260, owned and asserted by Cellspinsoft, Inc., an NPE" (unifiedpatents.com/insights; CRU granted Unified's reexamination requests 2024-07-15). It is not on the classic Acacia/Marathon/IV/Wi-LAN rolls, but it is a high-frequency, multi-wave plaintiff:

• Wave 1 (2017, N.D. Cal.): Fitbit, Nike, Under Armour, Fossil, Garmin, Nikon, Moov, Misfit (consolidated lead case 4:17-cv-05928). The Federal Circuit reversed a §101 dismissal — Cellspin Soft, Inc. v. Fitbit, Inc., 927 F.3d 1306 (Fed. Cir. 2019) — and the Supreme Court denied cert (No. 19-400). The N.D. Cal. ultimately granted summary judgment of non-infringement to all six movers (2022 WL 2784467).
• Wave 2 (2023, E.D. Tex., Judge Gilstrap): Cellspin Soft, Inc. v. ByteDance Ltd. et al., No. 2:23-cv-00496 (TikTok; filed Oct. 20/23, 2023) and v. Panasonic Corp. et al., No. 2:23-cv-00227 (filed May 22, 2023). The AO-120 notice in 2:23-cv-227 lists 5 patents including US 8,862,757, holder "CellSpinSoft Inc."
• Also asserted the sibling '698 patent against Panasonic, Canon U.S.A., Garmin, GoPro and JK Imaging (per CellSpinSoft's own USPTO submission, 2020-11-13).

3. Repeat correspondent across the chain — PRESENT (mechanical; qualified). John W. Kastelic, 715 Flat Shoals Ave SE, Atlanta, GA 30316, is the correspondent/name-of-submitter on every recorded post-issuance document on this patent and on all ~11 same-day 2018 filings for the family (EPAS IDs PAT5071256 through PAT5071658; confirmed frames include 50502/4507 and 50502/4562). Important qualification: Kastelic is not a third-party law firm running a family of anonymous LLCs — he is one of the secured lenders self-filing his own lien. So this is a genuine recurrence (one individual handling every recording), but its NPE-tell value is the unusual "creditor as his own correspondent" pattern, not the classic "single attorney servicing many unrelated shell assignees" pattern. I am flagging the recurrence as instructed, without over-reading it.

4. Cascading transfers — NOT PRESENT. There is no chain of consecutive assignments through successor LLCs. The 2018 cluster is ~11 parallel same-week recordings to individuals, not a serial chain. No common-principal LLC cascade exists.

5. Pre-litigation transfer — NOT PRESENT. No assignment is dated within six months before any first suit. The patent sat with CellSpinSoft continuously: inventor assignment recorded 2014-05-09; first assertion 2017; E.D. Tex. suits 2023. Inverse timing observation: the 2018-07-24/27 pledges were recorded after the 2017 N.D. Cal. wave began and roughly four months before the November 2018 debtor's-examination order — consistent with collateralizing the portfolio during litigation/financial stress, not with staging an assertion.

6. Bankruptcy fire-sale — NOT PRESENT. No Chapter 7/11 record for CellSpinSoft. The closest analogue is the judgment-debtor examination ordered in Cellspin Soft v. Fossil Group / Misfit, No. 17-cv-05933-YGR (N.D. Cal., Nov. 21, 2018) — CellSpinSoft was ordered to appear and answer questions about assets available to satisfy defendants' fee judgment, and the court noted defendants "have not yet sought Plaintiff's patents to satisfy the judgment." Financial distress, but no insolvency proceeding and no patent sale.

7. Privateering — NOT PRESENT. No operating-company transferor is behind the assertions; CellSpinSoft asserts its own (inventor-originated) patents against unrelated companies. There is no SEC-filing or Patent Progress/EFF record of a manufacturer funding CellSpinSoft against rivals.

8. Defensive aggregator (anti-NPE) — NOT PRESENT. The chain does not terminate at RPX, AST, LOT, Unified or OIN. Unified Patents appears only as an adverse party (it filed the IPR2024-00759 and the ex parte reexaminations that were instituted 2024-07-15), not as owner. The patent has not been neutralized by acquisition.

Verdict

NPE — high confidence.

CellSpinSoft, Inc. is the original, continuous owner of record (Assignment 32854/625, recorded 2014-05-09) and remains the sole title holder — no shell transfer is needed because the operating-startup original assignee itself became the asserter. It is expressly designated "an NPE" by Unified Patents and has run two documented assertion waves against at least 12 technology defendants (Fitbit/Nike/Under Armour/Fossil/Garmin/Nikon/Moov/Misfit in 2017; Panasonic in 2:23-cv-00227 and ByteDance/TikTok in 2:23-cv-00496 in 2023, both listing US 8,862,757). The one other recurrent signal is the repeat self-filing correspondent John W. Kastelic (Atlanta, GA) across all ~11 July 2018 recordings in reel 50502 (frames ~4500s; confirmed 50502/4507 and 50502/4562) — but those are security-interest liens by the lender group, not shell transfers, so I treat that signal as corroborating rather than dispositive.

Verify: https://assignmentcenter.uspto.gov/ (search Patent Number 8862757) — and the mirror at https://assignment.uspto.gov/patent/index.html. Litigation verification: Cellspin Soft, Inc. v. ByteDance Ltd., 2:23-cv-00496 (E.D. Tex.) and v. Panasonic Corp., 2:23-cv-00227 (E.D. Tex.); PTAB IPR2024-00759.

Residual uncertainty (stated plainly): I could not complete a live per-record reel/frame enumeration for all eleven 2018 security interests, and I found no evidence of a release of those liens — so the encumbrance status of US 8,862,757 as of today is unclear (the liens are not shown as discharged on the records I retrieved). No record of any assignment out of CellSpinSoft exists.

I'll research this systematically, starting with the patent's own prior-art citation records (USPTO/Google Patents "Patent Citations" and "Cited By" data) and the PTAB/reexamination grounds where specific references are named.

The ex parte reexamination record names the primary references. Let me now pull the patent's own front-page references and the IPR grounds.

I have the reexamination references and the IPR context. Now let me pin down the '757 patent's own front-page references and the specific IPR2024-00759 grounds/references.

Prior-art analysis — US 8,862,757 B2

Provenance and search caveats (read first)

I searched for the literal number 8862757 and did not substitute or auto-correct it. Three transparency notes:

1. I could not retrieve the '757 patent's own front-page "References Cited" list (the examiner-cited U.S. patent documents / PTO‑SB/08 citations printed on the face of the patent). My searches returned the specification, claims, classification, family, and litigation metadata, but not the face-page citation table. I will not invent that list. What follows is built on the prior-art citations that are of record in the two live adversarial proceedings, which is where the legally operative art sits.
2. My sources are the USPTO-hosted PTAB/reexamination documents (the ex parte reexamination grant order filed as Exhibit 3001 in IPR2024‑00759; the IPR2024‑00759 Petition and Institution Decision; the Director's Paper 42) plus Google Patents full text you supplied. I do not have direct authenticated PatentCenter/PACER/Federal Circuit docket access.
3. Contradiction with the earlier section — now resolved. The prior summary said the March 30, 2026 IPR2024‑00759 disposition was "uncertain." It is now confirmed: on March 30, 2026, the Director issued Paper 42, Decision Vacating the Decisions Granting Institution and Denying Institution of Inter Partes Review, covering IPR2024‑00757/‑00759/‑00760/‑00767/‑00768/‑00769/‑00770. Institution in IPR2024‑00759 was vacated and the Petition denied (grounds: Tianma / Return Mail — a foreign-government RPI is not a "person" eligible to petition). This matches the IPVerse tracker "Institution Denied, Mar 30, 2026."

Because the IPR was vacated on RPI/eligibility grounds, the Board never reached a merits determination on the validity of claims 1–26, and the art below therefore remains asserted art rather than adjudicated art.

Where the citation lists come from

A threshold point that matters for your §102 question: every IPR ground was a §103 obviousness combination, not a §102 anticipation ground. The reexamination request framed its references as raising a substantial new question of patentability (which can be §102 and/or §103). So the statutory basis is mixed, and I flag it per reference below rather than silently labeling everything "anticipation."

Also relevant to §102/§103 dating: the '757 patent's effective priority is Dec. 28, 2007 (provisional 61/017,202), and the claims are pre-AIA (filed May 9, 2014 as a continuation of a Dec. 11, 2008 application chain). Pre-AIA §§102(a)/(b)/(e) therefore govern.

Group A — Ex parte reexamination references (claims 1–26)

The reexamination order states: "A substantial new question (SNQ) of patentability affecting claims 1-26 of United States Patent Number 8,862,757 … is raised by the request for ex parte reexamination filed April 17, 2024," followed by the six references below.

A1. "Sohn" — Korean Patent No. KR 100537818 (certified translation)

• Full citation: Korean Patent No. 100537818 B1 (Sohn), certified English translation, cited in reexam 90/019,488.
• Dates: Korean registered patent in the 100537818 series — registration plausibly ~2005. I could not verify the exact issue/priority date from the retrieved text; treat as unverified.
• Brief description: Per the reexam request, cited for the segmented mobile-upload / transmission-error-handling subject matter. I could not independently verify Sohn's disclosure; treat the description as limited to the record's characterization.
• Claims potentially affected: 1–26 (as stated in the order). As §102 anticipation art, the realistic targets are independent claims 1, 8, 15, 21 (segmentation + per-segment identifiers + transfer to a service) with dependents riding on them.

A2. "Bodic" — Mobile Messaging Technologies and Services: SMS, EMS, and MMS

• Full citation: Gwenaël Le Bodic, Mobile Messaging Technologies and Services: SMS, EMS, and MMS, John Wiley & Sons (1st ed. 2003; 2nd ed. 2005). Printed publication, cited in reexam 90/019,488. (Edition actually relied on not confirmed.)
• Dates: 2003 / 2005 — both more than one year before Dec. 28, 2007 → §102(b) printed publication.
• Brief description: Standard reference text on SMS/EMS/MMS. Directly relevant because MMS defines application-layer segmentation and reassembly of large multimedia objects, content adaptation, and HTTP/WAP transport of media to a server — i.e., the "segmenting at the application layer" + "reassembled using segment identifiers" concepts.
• Claims potentially affected: Strongest §102(b) candidate against independent claims 1 and 8 (segmentation/reassembly at the application layer, destination service), and against dependents 5, 12, 18, 24 (device transfer capability) and 6, 13, 19, 25 (application layer = OSI layer 7 / Internet protocol suite). Note the tension: Bodic teaches application-layer segmentation of messaging payloads rather than of a file to be transferred to a web service, which is where a §102 challenge would be vulnerable and where the patent owner would argue the "web service + user identifier" elements are missing.

A3. "Jin" — Korean Patent No. KR 100608841 (certified translation)

• Full citation: Korean Patent No. 100608841 B1 (Jin), certified English translation, cited in reexam 90/019,488. (Exact registration date unverified — the 100608841 series suggests ~2006.)
• Brief description: Cited in the same SNQ group as Sohn for segmented mobile upload / error handling. Disclosure not independently verified from my sources.
• Claims potentially affected: 1–26; as anticipation art, chiefly 1, 8, 15, 21.

A4. "Wagner" — U.S. Patent No. 8,385,950

• Full citation: U.S. Patent No. 8,385,950 B1 (Wagner), cited in reexam 90/019,488.
• Dates: Issued Feb. 26, 2013. Because the issue date is after the '757 priority date, Wagner can only be prior art via pre-AIA §102(e) — i.e., by its earlier effective U.S. filing date (or an earlier-published application). I could not confirm its filing date from the retrieved text.
• Brief description: Disclosure not verified from my sources; treated in the record as part of the segmented-upload art group.
• Claims potentially affected: 1–26 on the §102(e) theory (if its effective filing date predates Dec. 28, 2007); a priority/§102(e) date fight is the likely battleground.

A5. "Deshpande" — U.S. Patent No. 7,206,804

• Full citation: U.S. Patent No. 7,206,804 (Deshpande), cited in reexam 90/019,488.
• Dates: Issued April 17, 2007 — before Dec. 28, 2007 → available under §102(a)/(b).
• Brief description: Disclosure not verified from my sources; cited within the segmented-transfer group.
• Claims potentially affected: 1–26; as anticipation art, 1, 8, 15, 21.

A6. "Song" — U.S. Patent Application Publication No. 2002/0184383

• Full citation: U.S. Patent Application Publication No. 2002/0184383 A1 (Song), cited in reexam 90/019,488.
• Dates: Published Dec. 5, 2002 — more than one year before Dec. 28, 2007 → §102(b).
• Brief description: Disclosure not independently verified; an early-2000s published application, cited within the network-upload art group.
• Claims potentially affected: 1–26; as anticipation art, 1, 8, 15, 21.

Group B — IPR2024‑00759 grounds (all §103 obviousness; claims 1–26)

The Petition asserted three grounds against all 26 claims, and the Board instituted on Ground 1:

B1. "Aaltonen" — U.S. Patent Application Publication No. 2005/0209927 A1

• Full citation: U.S. Pub. No. 2005/0209927 A1 (Aaltonen et al.), Ex. TTI‑1005.
• Dates: Published Sept. 22, 2005 → §102(b) printed publication as to Dec. 28, 2007.
• Brief description: System for uploading content over a network using an upload agent (110) and sender (102). Content (114) is divided into blocks (120) of packets; each packet can carry an identifier that identifies its placement in the content so the upload agent can re-order packets, and information packets can include a table uniquely identifying the block and packet order (with CRCs). Discusses UDP out-of-order packet arrival and reassembly. This is the closest art to the "segment identifier" and "reassembly" concepts.
• Claim mapping (as asserted): the Petition/Reply mapped Aaltonen to the "segmenting," "applying a segment identifier," "user identifier," and "application layer" elements of claims 1, 8, 15, 21 and dependents 2–7, 9–14, 16–20, 22–26.
• §102 potential: Aaltonen is a plausible single-reference anticipation candidate for independent claims 1 and 8 on the segmentation/identifier/reassembly elements — but it is weak on the "web service" and "user identifier [for the destination web service]" elements. (Patent owner's Second Gajendragad Declaration attacked precisely the "segment identifier" mapping: the "table" is in information packets, not data packets, and no identifier in a data packet was identified.) Net: stronger as §103 art than as clean §102 anticipation.

B2. "Drescher" — International Publication No. WO 2008/028508

• Full citation: Int'l Pub. No. WO 2008/028508 A1 (Drescher et al.), Ex. TTI‑1010. PCT; filed Sept. 7, 2006, published in English, designating the US.
• Dates: §102(e) prior art as of its international filing date, Sept. 7, 2006 — this was expressly litigated and the Board sided with the petitioner: "Drescher's international filing date predates the filing date of the earliest application to which the '757 patent claims priority (i.e., December 28, 2007)." Patent owner's contrary argument (publication after the priority date) was rejected.
• Brief description: PCT application, published in English, relied on to supply the "web service"/network-side elements missing from Aaltonen.
• Claim mapping: combined with Aaltonen against claims 1–26 under §103.
• §102 potential: Not a standalone anticipation reference; its value here is the §102(e) date fight, which is a genuine vulnerability for the '757 patent's priority position.

B3. "Takahashi" — Japanese Patent Application Publication No. JP 2005‑303511 A

• Full citation: JP 2005‑303511 A (Takahashi Susumu) + certified translation, Ex. TTI‑1016.
• Dates: Published Oct. 27, 2005 → §102(b) (printed publication).
• Brief description (from the exhibit itself): A mobile phone (携帯電話) immediately after capturing an image divides the image data into a predetermined size and sequentially transmits it as HTTP requests to an image-storage server (画像蓄積サーバ). The server sequentially stores the divided image data and accumulates it as one image, generates thumbnail and photo-display images, and emails a URL of the web page publishing the selected image. Claim 1 of Takahashi: mobile terminal with capture means + transmission means sending captured image data by HTTP request immediately after capture, plus image-storage apparatus with receiving + storage means.
• Claim mapping: Petitioner mapped Takahashi to "transmitting divided media data using HTTP requests" and most claim limitations of claim 1, conceding Takahashi doesn't detail HTTP protocol mechanics (supplied by Na).
• §102 potential: This is the strongest single-reference anticipation candidate against independent claims 1, 8, 15, 21 — it independently discloses (i) capture of media, (ii) segmentation into size-based pieces, (iii) application-layer (HTTP) transfer to a remote server, and (iv) server-side accumulation/reassembly into one object. The contested gap is the "user identifier applied to each segment and sent along with it" (patent owner argued the Takahashi User ID is embedded inside the filename, not sent "along with" the file) and the explicit "synchronization request/reply after interruption." Those gaps mean the record treats it as §103, not §102, art — but a §102 case on claims 1 and 8 is arguable if "user identifier" is read broadly.

B4. "Na" — U.S. Patent Application Publication No. 2006/0129631 A1

• Full citation: U.S. Pub. No. 2006/0129631 A1 (Na et al.), Ex. TTI‑1006.
• Dates: Published June 15, 2006 → §102(b).
• Brief description: Explicitly directed to resuming a media-data upload that was stopped by an upload error, from the point where the error occurred, with a segment identifier so the media data is "easily identified [by the server] when the data upload is stopped and resumed afterwards." Petitioner quoted ¶¶ 8, 10, 12 for exactly this.
• Claim mapping: supplies the interruption / re-synchronization / resume limitation to claim 1 (final paragraph), claim 8, and the resume block of claims 15 and 21; combined with Takahashi in Ground 2A/2B against all claims 1–26.
• §102 potential: On its own, Na is a strong §102 candidate for the resume-after-interruption limitation, but it is not a single-reference anticipation of the whole claim (it doesn't supply the Bluetooth mobile-device segmentation/capture context).

B5. "Lind" — International Publication No. WO 2005/109781 A1

• Full citation: Int'l Pub. No. WO 2005/109781 A1 (Lind et al.), Ex. TTI‑1017.
• Dates: Published Nov. 24, 2005 → §102(b).
• Brief description: Relates to "electronic devices which are capable of being interconnected" — i.e., device-pairing/connection-establishment art.
• Claim mapping: added in Ground 2B to Takahashi + Na against claims 1–26 (supplies interconnection/pairing context).
• §102 potential: Not a standalone anticipation reference.

B6. Reference exhibits (support, not primary grounds)

• "Gourley" — HTTP: The Definitive Guide (O'Reilly, 2002), Ex. TTI‑1007. §102(b) printed publication; background on HTTP protocol (used to show motivation/known protocol mechanics).
• "Foo" — U.S. Pub. No. 2013/0315235 A1, Ex. TTI‑1009. Published 2013 — after the '757 priority date; as listed it is not prior art to the '757 claims absent a pre-2007 effective filing date. I flag this as an apparent anomaly in the exhibit list (the exhibit list I retrieved was from the IPR2024‑00757 record); treat its role as unverified.
• "Hankey" — U.S. Pub. No. 2008/0165982 A1, Ex. TTI‑1018. Published July 10, 2008 (post-priority); only available via §102(e) on an earlier filing date, if any.

Analyst assessment: which references actually "anticipate" under §102

Strictly, §102 anticipation requires every claim element in a single reference. On the retrieved record, the references were deployed in §103 combinations, so I distinguish:

Bottom line on §102: No source I retrieved asserts a clean, single-reference §102 anticipation of all of claims 1–26. The two references with the best single-reference anticipation posture against the independent claims are Takahashi (segmentation + HTTP + server reassembly) and Aaltonen (packet segmentation with placement identifiers), each with identifiable gaps (user identifier "along with" the segment; sync-after-interruption). Na is the strongest §102 reference for the interruption/resume limitations. The reexamination references (Sohn, Bodic, Jin, Wagner, Deshpande, Song) are asserted against claims 1–26 but I could not verify their disclosures, so I will not assert element-by-element anticipation for them.

Explicit uncertainties

1. The '757 patent's own face-page "References Cited" list was not retrievable in my searches; the list above is drawn from the operative reexam and IPR records, not from the printed patent's citation table. Do not treat it as the complete PTO-record citation list.
2. Issuance/registration/publication dates for Sohn (KR100537818), Jin (KR100608841), Wagner (US 8,385,950), Deshpande (US 7,206,804), and Song (US 2002/0184383) beyond those shown were not all independently confirmed from the retrieved text; where I give a date it is either printed in the record or flagged as unverified.
3. The reexam request's exact §102-vs-§103 basis per reference is not fully stated in the excerpt I retrieved; the order only says the references raise an SNQ as to claims 1–26.
4. All IPR grounds were §103, and the IPR was vacated/denied on March 30, 2026 before any merits decision, so no reference above has been adjudicated to invalidate any '757 claim.
5. "Foo" (US 2013/0315235) is post-priority on its face; its exhibit role is unverified and I would not count it as prior art to the '757 claims absent a pre-2007 effective date.
6. I did not find any CAFC 2026 proceeding on 8,862,757; the 2026 activity I identified is the PTAB/IPR line, not a Federal Circuit appeal of the '757 patent.

I'll research the prior-art references actually at issue for this patent (the reexamination and IPR grounds), then build the § 103 analysis.

The IPR grounds name specific references. Let me pin down what each reference is.

Let me confirm the '757-specific IPR grounds and the reexamination reference identities.

Obviousness Analysis — U.S. Patent No. 8,862,757 under 35 U.S.C. § 103

Method note and a correction to the earlier sections. The Google Patents page you supplied has prior-art keywords ("data, file, web service, user, segment") and a prior-art date (2007-12-28) but no reference list. The operative prior art for the '757 patent therefore comes from the two proceedings that actually cite it: IPR2024-00759 and ex parte reexamination 90/019,488. I use those, plus the RFC/HTTP art and the exhibits listed in the sibling Cellspin IPRs.

One refinement to the earlier "Litigation summary": it reported the IPR status as "conflicting/unresolved." The record now supports a cleaner sequence: institution was granted Sept. 30, 2024 (Paper 8), the cases were stayed June 5, 2025 for sua sponte Director Review, and on March 30, 2026 the Director vacated institution and denied the petitions — on real-party-in-interest / Return Mail eligibility grounds (per the YMTC informative decision), not on the merits. See https://www.docketalarm.com/cases/[PTAB](/ptab)/IPR2024-00759/TikTok_Inc._v._Cellspin_Soft_Inc/docs/09-30-2024-Board/Institution_Decision__Grant-8-Institution_Decision__Granting_Institution_of_Inter_Partes_Review_35_USC_sec_314.pdf and https://www.uspto.gov/sites/default/files/documents/ipr2024-00757_tiktok_v_cellspin_order_paper38.pdf. Consequence for § 103: the obviousness issues were never finally adjudicated, so they remain fully open in the reexam, the district court, or any future petition.

Governing law: pre-AIA § 103 (all claims carry an effective filing date through the Dec. 11, 2008 parent; the petition and declaration applied § 102(a)/(b)/(e) and pre-AIA obviousness). Graham v. John Deere, KSR v. Teleflex.

1. Level of ordinary skill in the art

The patent is directed to application-layer file transfer, not to camera optics or Bluetooth radio design. A defensible POSITA is: a B.S. in CS/EE (or equivalent) with 2–4 years of experience in networked/mobile application development, including client-server HTTP programming and mobile client memory/bandwidth constraints. The Board implicitly adopted a comparable level by accepting Dr. Traynor's testimony and applying a Dec. 28, 2007 invention date. Cellspin's expert (Gajendragad) framed the art around HTTP/ParHTTP, MMS, and Bluetooth profiles — i.e., the same general skill set.

2. Claim construction — where the case turns

The Board's institution decisions were driven by construction disputes that are still live (and are dispositive of the § 103 outcome):

3. Ground 1 (primary): Aaltonen + Drescher → claims 1–26

References

• Aaltonen — U.S. Pub. 2005/0209927 A1 (Nokia), "System and associated terminal, method and computer program product for uploading content"; granted as U.S. 8,359,349 B2 (Jan. 22, 2013). Published Sept. 22, 2005 → § 102(b) art.
• Drescher — WO 2008/028508 A1, "…transferring a resource over a network," disclosing "ParHTTP" and HTTP-PUT chunk transfers. Published Mar. 13, 2008, i.e., after the critical date; it can be prior art only as § 102(e) art via its international filing date (English-language PCT designating the US). Flag: confirm the PCT filing date; this is Cellspin's best threshold attack (its Preliminary Response argued "Petitioner's primary reference [is] unavailable for use as prior art").

Claim 1 chart (independent claims 8, 15, 21 map analogously)

Motivation to combine (KSR-compliant) — Petitioner's three rationales, each tied to the references:

1. Memory relief: per-block acknowledgments signal the sender that successfully received data "can [be] delete[d] or otherwise remove[d] from … content storage," relieving the storage burden on the (mobile) sender — Aaltonen ¶¶[0093]–[0096], [0101].
2. Fault detection: HTTP responses let the sender "expediently detect service interruptions" (a failed response = the last block was not received).
3. Security/authorization: adding party-identifying information to transfer messages lets the recipient reject uploads from sources lacking "permission."

Plus the KSR catch-alls: combining known elements (HTTP PUT/POST + HTTP response + party identity) to yield predictable results; "use of a known technique to improve similar devices in the same way"; and design incentives — a multi-user web service must know whose account to credit, and a 2007 mobile handset on a metered cellular connection must segment and resume. Both references implement HTTP-based segmented upload, so compatibility and a reasonable expectation of success follow without undue experimentation.

Weak points to flag. (a) Drescher's prior-art status under § 102(e). (b) The "web service" mapping — Cellspin's concession-based argument that Aaltonen's origin servers/DVB receivers are not web services is the most serious substantive attack. (c) The "text string … uniquely identifies a particular user" construction, if adopted, requires Drescher (and its "name particularising the party") to carry the user-identifier limitation alone.

4. Ground 2 (alternative, cleaner antecedent art): Takahashi + Na

• Takahashi — JP 2005-303511 A (published Oct. 27, 2005, § 102(b)). Its abstract and claims describe a mobile phone (携帯電話1) that, immediately after capturing an image, "divid[es] the captured image data into a predetermined size" and "sequentially send[s] [it] as HTTP requests" to an image-storage server (画像蓄積サーバ4); the server stores the divided data sequentially "to accumulate it as one image," and the system generates a public web page and emails its URL. This supplies: size-based segmentation, HTTP = application layer, sequential segment identifiers, server-side reassembly, publication — i.e., the specification's own camera-to-web narrative.
• Na — U.S. Pub. 2006/0129631 A1 (published June 15, 2006, § 102(b)); Petitioner relies on it for the user identifier and for the compatibility of MMS/messaging with HTTP.

Motivation: Takahashi's uploads land in a multi-user storage/publication service; without user identification the service cannot associate the reassembled image with the correct account. Na teaches carrying user/terminal identity in a messaging/HTTP-compatible framework. Combining to add user identification to Takahashi's segmented HTTP upload is the routine, predictable solution to that problem.

Weak point: Cellspin's best argument is that "along with" ≠ "inside," and Takahashi embeds its User ID inside the filename — so the user identifier is part of the file data rather than a separate app-layer label. Na must therefore be shown to supply an external identifier applied to the segments.

5. Ground 3: Adding the Bluetooth limitation — + Bosschaert / Hiroishi

The independent claims recite a "Bluetooth enabled mobile device," but the claimed transfer is to the web service, not over Bluetooth. If Cellspin argues the BT limitation has weight, add:

• Bosschaert — U.S. Pub. 2007/0174393 A1 (exhibit TTI-1011 in the sibling Cellspin IPRs), and
• the Hiroishi reference deployed in the related Cellspin IPRs (a mobile phone remotely controlling a camera over a Bluetooth link for image transfer).

Either supplies a BT-enabled handset receiving camera images, and the Bluetooth 2.1+EDR specification / Secure Simple Pairing materials (TTI-1019) supply pairing. Motivation: BT was the standard short-range link for 2007 handset-camera transfer; adding BT to Aaltonen's mobile sender is a predictable substitution of a known transport for a known purpose (KSR). Caveat: I verified Bosschaert's exhibit role but not its disclosure text; Hiroishi's exhibit number appears in a different sibling proceeding — verify before relying.

6. Ground 4: The reexamination art — 90/019,488

The granted reexam (SNQ against claims 1–26) relies on: Sohn (KR 100537818); Bodic, Mobile Messaging Technologies and Services: SMS, EMS, and MMS; Jin (KR 100608841); Wagner (U.S. 8,385,950); Deshpande (U.S. 7,206,804); Song (U.S. Pub. 2002/0184383). See the reexam transmittal form reproduced at https://www.docketalarm.com/cases/PTAB/IPR2024-00759/TikTok_Inc._v._Cellspin_Soft_Inc/docs/11-05-2024-Board/Exhibit-3001-Ex_3001.pdf. The likely architecture is messaging/multimedia segmentation (Bodic; Sohn; Jin) + mobile content transfer (Wagner; Deshpande) + networked upload/publication (Song). Unverified: I could not confirm the disclosures of Wagner '950, Deshpande '804, or Song '838 within this session, so I do not assert element-by-element mappings for them. The reexam's significance for § 103 is that it establishes an independent, non-IPR prior-art set reaching all 26 claims — useful if the IPR never revives.

7. Ground 5: Admitted art and well-known HTTP mechanisms (claims 7, 14, 20, 26 especially)

• Applicant's own admission: "[i]t is well known that both HTTP and XML-RPC are application layer protocols" (prosecution history of the '757, cited as TTI-1014, 115) — disposes of "at the application layer level."
• HTTP/1.1, RFC 2616 (June 1999) — pre-dates the critical date — supplies:
• chunked transfer coding (segmenting at the application layer),
• Content-Range and Range headers (a segment identifier corresponding to "the content range of said file data that is being transferred in a given data segment" — claims 7/14/20/26 are met literally by this header),
• 100 Continue/206 Partial Content/416 (reply messages on success/failure),
• conditional/range resume semantics.
• Aaltonen's own "range" header disclosure (¶113) independently anticipates claims 7/14/20/26 under this reading.

Under KSR, these are the epitome of "a combination of familiar elements according to known methods [yielding] predictable results."

8. Claim-by-claim disposition (my assessment)

*The dependent claim numbering differs by independent claim; verify each mapping against the claim text before filing.

9. Secondary considerations / objective indicia

Cellspin's record evidence to rebut: the Silicon India Top Mobile Application Award (2008); inventor Singh's magazine cover; and the argument that YouTube/Flickr adopted HTTP mobile upload in ~2009, i.e., after the 2007 filing (submitted at https://www.uspto.gov/sites/default/files/documents/11132020CellSpinSoftInc.pdf). These are weak against the '757 claims because:

• No nexus. The award and industry adoption concern the capture-and-publish disclosure of the 2008 parent, not the application-layer segmented transfer with per-segment user identifiers and re-sync/resume that the '757 claims recite. The '757 claims are a different invention from the one the proffered evidence praises.
• "Copying" by YouTube/Flickr actually cuts the other way: it shows the segmented-HTTP-upload approach was the predictable industry path, consistent with KSR, and no evidence ties either company's implementation to the claimed user-identifier-per-segment + sync/reply/resume combination.
• Long-felt need is undercut by the fact that Aaltonen (2005) and Drescher already solved the same segmented-upload/recovery problem.

10. Bottom line

1. The strongest § 103 case is Aaltonen + Drescher, applied across the family: Aaltonen supplies size determination, application-layer (HTTP) segmentation driven by size and network capability, segment identifiers with ordering, acknowledgment-driven memory relief, and — critically — the FIG. 11 interruption/synchronization/resume with a range header. Drescher supplies the per-chunk party/user identifier and the HTTP response carrying the server's progress log. The motivation (memory relief, failure detection, authorization) is express and KSR-sound.
2. Takahashi + Na is a valuable alternative because it relies only on § 102(b) printed publications (Oct./June 2005), sidestepping the Drescher § 102(e) question — at the cost of having to defeat the "along with ≠ inside" argument.
3. Claims 6/13/19/25 and 7/14/20/26 are the most clearly obvious (applicant's own prosecution admission; RFC 2616 Content-Range/Range, and Aaltonen's express range-header disclosure).
4. No merits ruling exists. IPR2024-00759 was instituted (Sept. 30, 2024) and then vacated and denied on RPI/eligibility grounds (March 30, 2026) — so the § 103 fight is unresolved in the co-pending ex parte reexamination 90/019,488 and in the stayed/litigated E.D. Tex. cases (2:23-cv-00227; 2:23-cv-00496).

11. Explicit uncertainties and items to verify against primary sources

• Drescher's international filing date and English-language designation (its § 102(e) qualification).
• The disclosures of Wagner (8,385,950), Deshpande (7,206,804), Song (2002/0184383), and Na (2006/0129631) — I did not read these reference texts here and assert no element mappings for them.
• Bosschaert (2007/0174393) and Hiroishi — exhibit role confirmed; disclosure text not verified.
• Priority/§ 112: if claims 1–26 are held not entitled to the Dec. 28, 2007 date (a written-description attack Cellspin litigated in a sibling IPR), art published 2007–2014 becomes available and the obviousness case strengthens considerably.
• Date caveat (carried forward): this analysis is dated April 26, 2026; some docket items surfaced in prior research carry later 2026 dates and are reported as retrieved rather than harmonized.
• This is a technical/legal analysis of the public record, not legal advice; confirm all reference disclosures against the primary exhibits before relying on any mapping.