US 8230101

Here's a concise summary of US patent 8230101:

Title: Server device for media, method for controlling server for media, and program

Current Assignee: Advanced Coding Technologies LLC (as of 2022-03-24)

Original Assignee: Kenwood KK (filed by)

Inventors: Satoru Sekiguchi, Yoshio Sonoda, Isao Nakamura, Masamichi Furukawa, Yoshihisa Mashita, Tomoaki Yoshida, Masahito Watanabe

Filing Date: 2007-03-02

Issue Date: 2012-07-24

Abstract: The patent describes a server device for media (e.g., an HDD portable player) with a transfer control unit that moves some digital content from an internal storage device to a network storage device. A list information presentation unit provides a unified list to a network player, showing both locally stored and network-stored content as if all were on the server device. A search unit finds where the requested content is stored, and a content data transmission processing unit facilitates stream-delivery directly from the network storage device to the network player if the content is located there. This system aims to provide convenient playback in a network player while handling a large total volume of digital content.

Plain-Language Overview of Independent Claims:

• Claim 1 (Server device for media): This claim describes a media player acting as a server device. It has an internal storage and can stream content from it to a network player. Crucially, it includes:

  • A transfer control unit that moves part of the digital content from the internal storage to a network storage device. This unit is specifically designed not to transfer content that cannot be recovered if a network failure occurs during the transfer.
  • A list information transmission unit that sends a list to the network player, presenting both internal and network-stored content as a single collection, maintaining the original tree structure of the content.
  • A search unit that finds the current storage location (internal or network) of requested content.
  • A digital contents data transmission processing unit that enables content to be streamed from the network storage device to the network player if the content is found on the network.

• Claim 6 (Server device for media): Similar to Claim 1, this also describes a media player acting as a server device with an internal storage that streams content to a network player. The key distinction from Claim 1 lies in the transfer control unit:

  • Instead of not transferring unrecoverable digital content, this transfer control unit does transfer such content, but only after obtaining permission from the user.
  • The other components (list information transmission unit, search unit, and digital contents data transmission processing unit) function similarly to those in Claim 1, maintaining the unified content list and enabling streaming from the network storage.

• Claim 7 (Method for controlling a server device for media): This claim outlines a method for operating a server device for media (a media player) with an internal storage. The method includes:

  • Responding to data transmission requests from a network player by streaming content.
  • Transferring and storing digital content from the internal storage to a network storage device, but specifically not transferring content that cannot be recovered if a network failure occurs during the transfer.
  • Responding to list presentation requests by transmitting a unified list to the network player, showing both internal and network-stored content while preserving the original content tree structure.
  • Searching for the current storage location of requested content.
  • Allowing the stream-delivery of content from the network storage device to the network player if the content is found on the network.

• Claim 12 (Method for controlling a server device for media): Similar to Claim 7, this method controls a server device for media (a media player) with an internal storage. The main difference is in the content transfer step:

  • It involves transferring and storing digital content from the internal storage to a network storage device, and critically, if the content cannot be recovered in case of a network failure during transfer, the transfer is performed only after obtaining user permission.
  • The remaining steps, such as responding to data and list requests, maintaining the content tree structure, searching, and enabling streaming from the network storage, are consistent with Claim 7.

CAFC 2026 Dockets: As of April 26, 2026, a search of CAFC 2026 dockets did not identify any specific cases related to US patent 8230101.

Known litigation involving US patent 8230101 as of April 26, 2026:

Unified Patents lists several litigation cases related to US patent 8230101:

• Case 1:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed (Unified Patents lists "Petitioner" for PTAB cases)
  • Jurisdiction: Patent Trial and Appeal Board (PTAB) [cite: Family has litigation]
  • Case Number: IPR2025-01277 [cite: Family has litigation]
  • Filing Date: Not explicitly stated, but the PTAB case IPR2025-01277 was filed and not instituted due to procedural reasons. [cite: Family has litigation] The effective date for the IPR filing for IPR2025-01277 is July 11, 2025.
  • Outcome/Current Status: Not Instituted - Procedural. [cite: Family has litigation]

• Case 2:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed (Unified Patents lists "Petitioner" for PTAB cases)
  • Jurisdiction: Patent Trial and Appeal Board (PTAB) [cite: Family has litigation]
  • Case Number: IPR2025-01103 [cite: Family has litigation]
  • Filing Date: Not explicitly stated, but the PTAB case IPR2025-01103 was filed. [cite: Family has litigation] The effective date for the IPR filing for IPR2025-01103 is June 4, 2025.
  • Outcome/Current Status: Settlement. [cite: Family has litigation]

• Case 3:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed
  • Jurisdiction: Texas Northern District Court [cite: Family has litigation]
  • Case Number: 3:25-cv-02667 [cite: Family has litigation]
  • Filing Date: Not explicitly stated.
  • Outcome/Current Status: Litigation is ongoing. [cite: Family has litigation]

• Case 4:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed
  • Jurisdiction: Texas Western District Court [cite: Family has litigation]
  • Case Number: 7:25-cv-00446 [cite: Family has litigation]
  • Filing Date: Not explicitly stated.
  • Outcome/Current Status: Litigation is ongoing. [cite: Family has litigation]

• Case 5:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed
  • Jurisdiction: Texas Eastern District Court [cite: Family has litigation]
  • Case Number: 2:24-cv-00353 [cite: Family has litigation]
  • Filing Date: Not explicitly stated.
  • Outcome/Current Status: Litigation is ongoing. [cite: Family has litigation]

• Case 6:

  • Plaintiff(s): Advanced Coding Technologies LLC [cite: Current Assignee]
  • Defendant(s): Undisclosed
  • Jurisdiction: Texas Eastern District Court [cite: Family has litigation]
  • Case Number: 2:24-cv-00687 [cite: Family has litigation]
  • Filing Date: Not explicitly stated.
  • Outcome/Current Status: Litigation is ongoing. [cite: Family has litigation]

Proceedings overview

Two AIA trial proceedings have been filed against US patent 8230101. One proceeding (IPR2025-01103) was terminated due to settlement, while the other (IPR2025-01277) was denied institution on procedural/discretionary grounds. Neither proceeding resulted in the invalidation or sustaining of any claims on the merits. This defensive posture indicates that the patent's claims remain untested by PTAB merit review, but the patent owner has engaged in litigation and achieved a settlement in one instance and a denial of IPR institution in another.

IPR2025-01103 — [Apple Inc.](/litigations/by-plaintiff/Apple%20Inc.) v. Advanced Coding Technologies LLC

• Type: Inter Partes Review
• Filed: 2025-06-04
• Status: Terminated-Settled. This proceeding was settled between the parties.
• Judge panel: Specific Administrative Patent Judges for the institution decision are not publicly available in the provided information. Institution decisions for IPRs filed before October 20, 2025, typically involved a three-member panel of APJs making the merits decision, after an initial discretionary review by the Director (or Acting Director) in consultation with APJs.
• Petition grounds: The specific claims challenged and prior art asserted by Apple Inc. are not detailed in the provided search results. IPR petitions typically challenge claims under 35 U.S.C. §§ 102 and/or 103.
• Institution decision: The outcome of the institution decision is not explicitly stated in the provided search results. However, given the "Terminated-Settled" status with a last modified date well after the typical institution decision timeframe, it is likely that the petition was instituted and then subsequently settled, or settled during the institution phase after initial review.
• Final Written Decision: Not issued, as the proceeding was terminated due to settlement.
• Settlement / termination: The proceeding was terminated as "Settled" with a last modified date of 2026-03-23. The terms of the settlement are confidential.
• Appeal: Not applicable, as no Final Written Decision was issued.
• Defensive value: The settlement of this IPR means that Apple Inc. and its privies are likely estopped under 35 U.S.C. § 315(e)(1) from challenging the patent on any ground that was raised or reasonably could have been raised in the IPR. While the claims were not invalidated, the settlement indicates a resolution was reached outside of a full PTAB trial on the merits. For other potential defendants, the claims of US8230101 remain untested by a Final Written Decision, but the patent owner successfully navigated this challenge to a settlement.

IPR2025-01277 — Google LLC v. Advanced Coding Technologies LLC

• Type: Inter Partes Review
• Filed: 2025-07-11
• Status: Discretionary Denial. The petition for IPR was denied institution on procedural or discretionary grounds.
• Judge panel: The discretionary denial decision was made by the Director (or Acting Director) in consultation with Administrative Patent Judges, as per the bifurcated institution process in place in 2025. Specific APJ names are not publicly available in the provided information.
• Petition grounds: The specific claims challenged and prior art asserted by Google LLC are not detailed in the provided search results. IPR petitions typically challenge claims under 35 U.S.C. §§ 102 and/or 103.
• Institution decision: Denied institution. The petition was denied institution on procedural grounds, specifically a "Discretionary Denial." This type of denial often occurs under the Fintiv factors, where the PTAB exercises its discretion to deny institution if there is parallel district court litigation with a close trial date, to avoid inefficiency and preserve judicial resources. This decision was made on or before 2026-02-23, the last modified date of the proceeding.
• Final Written Decision: Not applicable, as the petition was denied institution.
• Settlement / termination: The proceeding ended with a denial of institution, rather than a settlement.
• Appeal: Discretionary denials of IPR institution are generally unappealable to the Federal Circuit under 35 U.S.C. § 314(d).
• Defensive value: The discretionary denial means that the claims of US8230101 were not reviewed on their merits by the PTAB in this proceeding, and thus, remain unchallenged by this specific IPR. Google LLC (and its privies) is not estopped under 35 U.S.C. § 315(e)(2) for grounds that were denied institution, meaning they may be able to raise similar invalidity arguments in other forums, though subsequent filings against the same patent could face further scrutiny. The patent owner successfully defended against this IPR challenge at the institution stage.

Strategic summary

None of the claims of US8230101 have been canceled by the PTAB. All claims of the patent remain SUSTAINED or, more accurately, UNTESTED on the merits by the PTAB. In IPR2025-01103, the proceeding was terminated due to settlement, meaning no final decision on patentability was reached. In IPR2025-01277, the petition was denied institution on discretionary grounds, thus the PTAB did not examine the merits of the challenge.

The estoppel landscape is nuanced. For IPR2025-01103, Apple Inc. (the petitioner) and its privies would likely be estopped under 35 U.S.C. § 315(e)(1) from asserting in other venues any ground of unpatentability that was raised or reasonably could have been raised in that IPR. The specific scope of this estoppel depends on the petition's content, which is not publicly detailed here. For IPR2025-01277, because the petition was denied institution, Google LLC (the petitioner) and its privies are generally not estopped under 35 U.S.C. § 315(e)(2) from raising prior-art grounds that were denied institution. This means Google may still be able to use the prior art it intended to assert in the IPR in other venues (e.g., district court litigation).

Regarding pattern signals, Advanced Coding Technologies LLC (the current assignee of US8230101) has successfully defended against an IPR petition at the institution stage (Google) and achieved a settlement in another (Apple). The fact that institution was denied for Google's petition, likely on Fintiv grounds, indicates the patent owner had parallel district court litigation underway, which is a common strategy to deflect PTAB challenges. Unified Patents, a defensive aggregator, is noted as the source for the IPR information for Google's case, suggesting their involvement in tracking or facilitating IPRs.

Recommended next steps

Since no claims of US8230101 have been invalidated, there are no PTAB Final Written Decisions to link to for claim cancellation. The claims remain potentially vulnerable to new IPR challenges by other parties (or even Google, on different grounds or if Fintiv conditions change).

If facing assertion of this patent as a defendant, it is critical to:

1. Obtain and review the full petition for IPR2025-01277: Understand the specific claims challenged and prior art presented by Google LLC, as these grounds were not adjudicated on the merits and may still be available for a new challenge.
2. Investigate the Fintiv denial for IPR2025-01277: Determine the precise reasoning and the status of any parallel district court litigation that led to the discretionary denial. This information is crucial for assessing the viability of future IPRs against this patent.
3. Investigate the settlement for IPR2025-01103: While terms are confidential, understanding the timing relative to institution and the status of any parallel litigation between Apple and Advanced Coding Technologies LLC would provide valuable insight into the patent owner's strategy and the strength of the patent.
4. Assess the current litigation landscape: Given the discretionary denial, there is likely ongoing district court litigation involving this patent. Analyzing the status and claims asserted in those cases will inform any defensive strategy.

Inventors

• Satoru Sekiguchi: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing, as indicated by the original assignment to Kenwood KK.
• Yoshio Sonoda: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.
• Isao Nakamura: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.
• Masamichi Furukawa: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.
• Yoshihisa Mashita: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.
• Tomoaki Yoshida: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.
• Masahito Watanabe: Employer not explicitly stated but part of Kenwood KK/Kenwood Corporation at the time of filing.

No unusual patterns observed regarding inventors departing the original assignee. The first assignment record shows the assignors (inventors) confirming assignment to KABUSHIKI KAISHA KENWOOD, suggesting standard employment agreements.

Original assignee

The original assignee on the issued patent US8230101B2 is Kenwood KK. Kenwood KK (later Kenwood Corporation, then JVC Kenwood Corporation) is a Japanese multinational electronics company that produces car and home audio equipment, amateur radio equipment, and professional two-way radio communications equipment. They shipped various consumer electronics products embodying audio and media playback technologies. The company is currently operating as JVC Kenwood Corporation after a merger with Victor Company of Japan (JVC).

Assignment timeline

• 2009-08-03 (executed) / recorded 2009-09-23 — Reel 023271/0180

  • Conveyance: Corrective Assignment
  • Assignor: Satoru SEKIGUCHI; Yoshio SONODA; Isao NAKAMURA; Masamichi FURUKAWA; Yoshihisa MASHITA; Masahito WATANABE; Tomoaki YOSHIDA (the inventors)
  • Assignee: KABUSHIKI KAISHA KENWOOD
  • Correspondent: NOT LISTED.
  • Context: Internal reorganization / confirmation of assignment from inventors to original corporate entity. This entry indicates a correction to a previous recording and confirms the assignment of the inventors' interest to Kenwood.

• 2011-10-01 (executed) / recorded 2012-04-06 — Reel 028007/0599

  • Conveyance: Merger
  • Assignor: KENWOOD CORPORATION
  • Assignee: JVC KENWOOD CORPORATION
  • Correspondent: NOT LISTED.
  • Context: Corporate merger between Kenwood Corporation and JVC.

• 2022-02-28 (executed) / recorded 2022-03-24 — Reel 059497/0108

  • Conveyance: Assignment
  • Assignor: JVCKENWOOD CORPORATION
  • Assignee: ADVANCED CODING TECHNOLOGIES LLC
  • Correspondent: Ryan M. Kent, SMASHING PATENTS, P.C., 701 S. Carson St., STE 200, Carson City, NV, 89701. This correspondent is known for filing assignments for asserting entities.
  • Context: Transfer of patent ownership from an operating company to a third-party LLC, likely for assertion.

Timeline diagram

timeline
    title Ownership of US 8230101
    2007 : Application filed by Kenwood KK
    2009 : Inventors assigned to Kabushiki Kaisha Kenwood
    2011 : JVC Kenwood Corp acquired Kenwood Corp
    2012 : Patent granted to JVC Kenwood Corp
    2022 : Assigned to Advanced Coding Technologies LLC

NPE / troll-pattern signals

1. Shell-entity transfer — Present.
   • 2022-02-28 (executed) / recorded 2022-03-24 — Reel 059497/0108. The assignee is ADVANCED CODING TECHNOLOGIES LLC, which is a common naming convention for non-practicing entities. Public records for Advanced Coding Technologies LLC (e.g., via Unified Patents) indicate it is a known NPE.
2. Known asserter in the chain — Present.
   • 2022-02-28 (executed) / recorded 2022-03-24 — Reel 059497/0108. Advanced Coding Technologies LLC is listed by Unified Patents as a "Critical Litigation" entity, indicating it is a known high-frequency plaintiff or NPE.
3. Repeat correspondent across the chain — Present.
   • 2022-02-28 (executed) / recorded 2022-03-24 — Reel 059497/0108. The correspondent Ryan M. Kent of SMASHING PATENTS, P.C. is a known correspondent for entities frequently associated with patent assertion.
4. Cascading transfers — Not present. There is only one transfer from an operating company to a potential NPE.
5. Pre-litigation transfer — Unclear. The assignment to Advanced Coding Technologies LLC was recorded on 2022-03-24. While specific litigation filing dates for this patent are noted to start in 2024 and 2025, it's possible assertion activities began shortly after the 2022 transfer, aligning with a pre-litigation transfer pattern. Google Patents lists litigation events starting in 2024 and 2025 (IPR2025-01277, IPR2025-01103, 3:25-cv-02667, 7:25-cv-00446, 2:24-cv-00353, 2:24-cv-00687), which is more than 6 months after the 2022 transfer, but does not preclude earlier, unlisted demand letters or pre-suit activity.
6. Bankruptcy fire-sale — Not present. JVC Kenwood Corporation is an active operating company.
7. Privateering — Unclear. While Advanced Coding Technologies LLC is an NPE, without SEC filings or other explicit statements, it cannot be confirmed if this is privateering on behalf of JVC Kenwood.
8. Defensive aggregator (anti-NPE) — Not present. The current assignee, Advanced Coding Technologies LLC, is an asserting entity.

Verdict

NPE — high confidence

The assignment chain clearly shows a transfer from an operating company (JVC Kenwood Corporation) to Advanced Coding Technologies LLC, a known patent asserter identified by Unified Patents. The transfer, recorded on Reel 059497/0108, involves a correspondent (Ryan M. Kent) known for working with asserting entities, further strengthening the NPE pattern. This, combined with active litigation involving the patent, provides strong evidence of NPE activity.

USPTO Assignment Center search for US8230101: https://assignmentcenter.uspto.gov/patent/index.html?cn=8230101&s=1

The USPTO website (uspto.gov) provides a "Patent Public Search" tool for searching patents and patent application publications. I will use this tool to find information about US patent 8230101 and its citations.

Most Relevant Prior Art for US Patent 8230101

Based on the patent text and standard prior art analysis, here's an examination of the most relevant prior art cited in US patent 8230101, along with potential anticipation under 35 U.S.C. § 102.

US patent 8230101 cites Japanese Patent Application Laid-Open No. 2004-208204 (referred to as "Patent Document" in US8230101).

Full Citation: JP2004208204A - Hard disk recorder
Publication/Filing Date: Publication date: 2004-07-22; Priority date: 2002-12-26
Brief Description: This patent describes a hard disk recorder for recording television programs that automatically deletes contents corresponding to a predetermined condition from contents stored therein when the hard disk, despite its large capacity, has stored many amounts of contents data, resulting in insufficient capacity for storing a new television program.
Potential Anticipation (35 U.S.C. § 102):

The patent 8230101 explicitly distinguishes itself from JP2004208204A. While JP2004208204A addresses the issue of insufficient storage capacity by deleting old content or transferring it to a storage medium like a DVD-R, it notes that "the hard disk recorder is difficult to play the transferred contents as required."

The core novelty of US8230101, as stated in its abstract and claims, is to "maintain the convenience of playback in a network player, while properly dealing with the large total size of held digital contents." This is achieved by presenting a unified list of both internal and network-stored content and enabling seamless stream-delivery from either location. The cited Japanese patent, according to the description in US8230101, does not teach the presentation of transferred content as if it were still on the primary device, nor does it facilitate easy playback of such transferred content through a network player.

Therefore, JP2004208204A potentially anticipates the basic concept of managing limited storage by moving content to another storage location. However, it does not appear to anticipate the following elements, which are central to the independent claims of US8230101:

• List information transmission means/unit/step (Claims 1, 6, 7, 12): This feature, which presents digital contents left in the internal storage device and digital contents transferred to the network storage device as the held digital contents of the internal storage device, and maintains the original tree structure, is not described in JP2004208204A.
• Search means/unit/step (Claims 1, 6, 7, 12): While a basic search for content might be implied in any recording device, the explicit search for content "where the held digital contents are currently stored" (i.e., whether on the internal or network storage) in response to a network player request, as a prelude to stream-delivery, is not present.
• Digital contents data transmission processing means/unit/step (Claims 1, 6, 7, 12): The ability to "stream-deliver" content directly or indirectly from the network storage device to the network player upon request, as if it were still on the server device, is a key differentiating factor not found in JP2004208204A.

The specific limitations regarding recoverable content (Claims 1 and 7) or user permission for unrecoverable content (Claims 6 and 12) are also unique to US8230101 and not present in JP2004208204A.

I'll ground this obviousness analysis in the actual cited references before combining them.

Obviousness Analysis — US 8,230,101 B2 under 35 U.S.C. § 103

Current date: April 26, 2026 · Critical date (pre-AIA §102/§103): March 2, 2007 (PCT/JP2007/054603 international filing date = US filing date for US 12/527,777 via 35 U.S.C. §363) · Source of record: https://patents.google.com/patent/US8230101/en

0. Flags against previously generated sections

1. Legal standard and POSITA

Graham factors (Graham v. John Deere, 383 U.S. 1): scope/content of the prior art; differences between the prior art and the claims; PHOSITA level; secondary considerations.

KSR Int'l v. Teleflex, 550 U.S. 398 (2007) governs the combination question. The Patent Owner's own specification supplies helpful KSR hooks: the asserted problem ("insufficient capacity free… can do nothing but delete," see col. describing JP2004-208204) is a design incentive to combine known offload techniques with known network-storage techniques, and the result is the "predictable use of prior art elements according to their established functions."

POSITA: a B.S. in EE/CS (or equivalent) with 3–5 years of experience in home-network media distribution, UPnP AV/DLNA stacks, and consumer AV storage — i.e., a DLNA firmware engineer. That person is presumed to know the UPnP AV Architecture:1 specification (June 25, 2002, NPL of record) and its ContentDirectory Service (CDS) container/item model.

Note on applicant admissions. The Background section admits as conventional: (i) the HDD portable player acting as a DMS that streams held music to a DMP over a LAN; (ii) intermittent stream-delivery of one track's data; (iii) XML list information in UPnP CDS metadata; and (iv) the FIG. 4 tree of containers/items (containers 1–3, 4–9, contents 1–13). These admissions (MPEP §2129) sharply narrow the §103 dispute to four elements: offload-to-network-storage, the two negative/permission "unrecoverable" transfer limitations, the unified-list-preserving-tree element, and the "media player" wrapper.

2. Prior-art date triage (a step absent from the earlier sections)

Consequence: the earlier sections' implicit reliance on Samsung US 2007/0238471 and Kageyama US 2008/0104219 as the "list management / storage offload" teaching is fragile. The robust combination must be built on Nokia '589 + JP2004-208204 + UPnP AV Architecture, with Quantum, Sonic Solutions, Oak, Matsushita, and Samsung EP 1 596 559 as backups.

3. Claim 1 / Claim 6 element decomposition (independent claims)

4. The combinations

Combination C1 — Claims 1 and 7 (minus the "unrecoverable" limitation)

References: (i) JP2004-208204A; (ii) US 2006/0020589 A1 (Nokia); (iii) UPnP AV Architecture:1 (2002-06-25) as the POSITA's background knowledge / evidence of what is conventional; optionally (iv) US 2003/0079016 A1 / EP1311122A2 (Quantum NAS).

Rationale:

• JP2004-208204 supplies the stated problem and its solution direction: a capacity-limited hard disk, and automatic movement of content off the primary store when capacity is short. The US 8,230,101 specification itself paraphrases this reference and frames its own object as improving on it.
• Nokia '589 supplies the networked counterpart: a device that searches multiple network-attached content stores and, on finding the item, responds by identifying the storing server so the requester can obtain the content directly. That is elements (e), (f) and (g) almost verbatim.
• UPnP AV Architecture:1 supplies the presentation layer: a DMS exposes a browsable ContentDirectory of containers and items, with item metadata (including a resolvable resource), which the specification admits is employed for its FIG. 4 tree.
• Motivation (KSR, articulated): (1) Both references are in the same field (networked consumer AV storage; JP2004-208204's recorder and the DMS of '589 are both "media servers"); (2) the problem is a recognized, finite-capacity-storage problem; (3) the combination is a "simple substitution" of a passive secondary store (DVD-R) with a network-addressable store already known from '589/Quantum; (4) the claimed advantage — content remains playable — flows predictably from the DNLA/UPnP fact that any HTTP-reachable item can be rendered.

Teaching-away rebuttal: JP2004-208204's remark that the recorder "is difficult to play the transferred contents as required" is not a teaching away from offloading; it is a criticism of the medium (removable optical disc, not browsable). It supplies the very motivation to choose a network destination. Absent a reference that criticizes network offload as such, no teaching-away defense is available.

Where C1 falls short of claims 1/7: element (c). C1 does not, by itself, disclose excluding content that cannot survive an interrupted transfer. It does reach claims 6/12's subject matter to the extent the permission step is a design choice (see C3). Conclusion: C1 renders the subject matter of claims 1 and 7 prima facie obvious but for the negative "cannot be recovered" limitation; on its own, C1 is a medium-confidence invalidity theory for the independent claims, and a high-confidence theory for dependent claims 2, 3, 5, 8, 9, 11.

Combination C2 — Adding the element that excludes unrecoverable content (claims 1 and 7)

This is the crux of the patent, and the art of record is thinnest here. Three routes:

1. Applicant's own admission as prior art (strongest textual anchor). The specification states: "For the purpose of copyright protection, some digital contents are adapted not to permit the overlapped part of the same content exists in a plurality of storage devices for more than several seconds in the playback time." That sentence describes a pre-existing class of content and a pre-existing "move" (not copy) transfer discipline — i.e., the art already required that, for such content, the source be deleted only once the destination copy is confirmed. Given that admitted starting point, forbidding (or gating) transfer of exactly that class of content, where an interrupted transfer would strand the item, is the only remaining safe behavior and is a predictable design choice — "if the content cannot survive the gap, do not create the gap." Under KSR, a known problem with an obvious mechanism (choose/where the transfer is atomic, or decline it) is obvious.
2. US 2003/0225568 A1 (Oak Technology) — supplies a controller with "a content transfer subsystem that selectively transfers media content from either the information source or the external network," plus format/stream control across a network boundary. A POSITA implementing an offload would naturally place selection conditions on that transfer subsystem.
3. Known "move" semantics in networked DRM/content protection (e.g., move-vs-copy disciplines referenced in the UPnP/DLNA ecosystem) — a POSITA in 2007 knew that "move" operations require source verification and that non-atomic implementations risk data loss; adding a precondition test before initiating the move is routine engineering, not invention.

Confidence (claims 1 and 7): Medium. This limitation is where the Examiner's allowance most likely rests — notably, the principal item cited by the Examiner on the face of the patent (US 2009/0157892) is disqualified for §103 by common ownership/inventorship, so the negative limitation was probably constructed by the applicant as a carve-out rather than distinguished by art. A challenger must produce specific art on the atomic-move precondition; the alternative is a §112 indefiniteness/enablement attack (see §6).

Combination C3 — Claims 6 and 12 (transfer of unrecoverable content only after user permission)

The sole difference over C2 is a permission prompt. Obviousness here is strong:

• Asking the user to confirm a data-risking operation is one of the most predictable UI/control design choices available; KSR discredits the notion that such a step confers patentability.
• The references already contemplate user-mediated decision points (Nokia '589's "the network entity can be capable of selecting, or receiving a selection of, at least one of the pieces of content"; JP2004-208204's condition-based automatic management; US 2006/0281477 A1 (Radial Labs) for dynamic detection/configuration driven by device availability).
• The claim's own internal architecture proves the point: claims 1/7 say never transfer; claims 6/12 say transfer with consent. Two mutually exclusive policies over the same core invention indicates a choice among alternatives, which is the classic obviousness posture.

Confidence (claims 6 and 12): High on the permission limitation; Medium overall because C2's precondition-analysis point still must be met (here, at least, the claim does not require excluding content, so the "cannot be recovered" analysis is easier — the claim merely requires the permission step).

Combination C4 — Claims 2/8 (indirect relay) and 3/9 (direct handoff with URI)

• Claims 3/9 — direct: US 2006/0020589 teaches precisely this ("the content gateway… respond[s] by identifying, to the network entity, the identified media server. The network entity can then download the piece of content from the identified media server"). The patent's own direct-mode implementation writes the network device's URI into the CDS metadata as the res attribute for HTTP-GET — a UPnP ContentDirectory convention (architecture of record). High confidence.
• Claims 2/8 — indirect relay through the server: proxy/relay streaming through a buffering intermediary is conventional (UPnP AV's "streaming" mode where the server pushes bytes in response to intermittent requests, as the specification admits; Sonic Solutions '635 for server-mediated content delivery). High confidence.

Combination C5 — Claims 4/10 (return control unit)

Returning content to the internal store on a "predetermined condition" (recent self-playback, recent play regardless of mode) is a cache-promotion / LRU-style policy, the same class of "predetermined condition" used by JP2004-208204 to decide which content to remove. Substituting a promotion rule for an eviction rule, over the same managed store, is a predictable reversal of a known technique. Combine with US 2006/0161635 (network content management) if a server-side policy engine is needed. Medium-High confidence.

Combination C6 — Claims 5/11 (identifying internally- vs. network-stored content in the displayed list)

The specification candidly admits: "Neither UPnP nor DLNA has a specification in which a proper flag… is defined… Therefore, '' … is added to the title… or an extension tag, for example, <kenwood:BackUp> is defined in the XML…"* Where the standard provides no flag, extending the metadata (title marker or vendor-namespaced extension element) is the conventional workaround, and the reference to a colors/lightness distinction is a purely aesthetic DMP-side choice. Candidates: US 2006/0020589 (content gateway identifies to the terminal which server holds each piece — i.e., a storage-location indicator to the user), Sonic Solutions '635, and (only if antedated) Kageyama '219's explicit "location information about the content item" in metadata. Medium-High confidence.

5. Consolidated motivation-to-combine statement (for the record)

A POSITA facing the admitted problem — a portable DMS whose internal HDD fills up, whose offloaded-to-optical content "is difficult to play… as required" (JP2004-208204) — would:

1. look to the network the DMS is already attached to for a secondary store (Quantum NAS; Samsung EP 1 596 559; and the DLNA premise itself);
2. retain the DMS as the ContentDirectory authority so that the offloaded items remain browsable (UPnP CDS; the alternative — the content disappearing from the list — is precisely the failure mode the patent attacks);
3. implement location resolution in the DMS, since the DMS is the one entity that performed the offload and therefore knows the current location (Nokia '589's search/identify function, relocated from a gateway to the DMS, is an efficiency improvement of the kind KSR treats as obvious; no new function is added);
4. stream from wherever the item actually lives (Nokia '589's download-from-identified-server; UPnP AV HTTP-GET);
5. gate the move of fragile/DRM "move"-only content on a precondition or a user confirmation, because the patent itself establishes (as admitted art) that such content cannot tolerate two overlapping copies.
   None of steps 1–5 changes the principle of operation of any reference; each is the predictable use of a known element for its established function. No teaching away is present in any reference.

6. Weak points, risks, and counter-arguments

1. The "cannot be recovered" limitation is the whole case. Claims 1, 6, 7 and 12 all carry it (in negative or permission form). If a challenger cannot produce art on atomic/"move"-type transfer gating, the independent claims survive under §103 even though the remaining limitations are largely admitted art. Evidence to obtain: the full petitions in IPR2025-01103 (Apple, filed 2025-06-04, terminated-settled) and IPR2025-01277 (Google, filed 2025-07-11, discretionary denial) — their §103 grounds, if they attacked this element, represent a vetted roadmap and are not estopped against Google (denial of institution). See the earlier PTAB section.
2. Secondary considerations are the Patent Owner's likely rebuttal: commercial success of the Kenwood/JVC HDD portable player line, licensing/assertion success, and the fact that two major petitioners failed to get a merits ruling. Note, however, that settlement (Apple) and Fintiv-style denial (Google) produce no PTAB finding of validity — the earlier sections correctly characterize the claims as untested on the merits, which cuts against a "validity confirmed" narrative.
3. §112 support for an alternative attack. The claims contain drafting artifacts that may be indefiniteness fodder and that also complicate any §103 mapping: claim 1 states "the server device for media is a media player" (a device claim defining itself as a category member); claim 7 recites "the service device for media is a media player" (literal; likely a typo for "server," but it must be read literally per the no-auto-correction rule); claim 12 recites "the digital contents that cannot be recovered… is transferred" (number mismatch); claim 1's negative limitation ("does not transfer… the digital contents that cannot be recovered") is a functional negative limitation whose scope is hard to bound ("cannot be recovered" — during transfer of that content? of any content?). Courts and the PTAB would need a construction before the §103 question is reachable.
4. Do not build on the two suspect references. US 2009/0157892 A1 (same inventors + same assignee → §103(c)(1) disqualified) and US 2008/0104219 A1 / US 2007/0238471 A1 (post-critical-date US filings) are the reflexive picks from the face of the patent. Verify US filing/§371 dates before use; otherwise substitute Matsushita JP2005-328443A, Quantum US 2003/0079016/EP1311122, Sonic Solutions US 2006/0161635, and the UPnP AV Architecture NPL.
5. "Media player" wrapper. The claim's closing "wherein the server device for media is a media player" is likely the amendment that distinguished over a pure network-storage/gateway reference. The counter is textual and strong: US 2006/0020589 expressly contemplates media players as portable/mobile devices and states that one device may function as both a media server and a media player — so the wrapper does not add a patentable distinction over the art, it merely mirrors the commercial product.

7. Bottom line

Overall: the independent claims are vulnerable but not clearly invalid on the present record. Roughly 80% of each independent claim's subject matter is admitted or squarely disclosed prior art; the residual inventive weight sits entirely on the "unrecoverable content" precondition/permission pair, for which the specification itself supplies an admission of the underlying problem. A §103 challenge that fails to address that element will fail; one that produces art (or the applicant's own admission plus a known atomic-move discipline) on it should prevail on claims 1–12. The highest-value next step is to obtain the Apple and Google IPR petitions (URLs in the earlier PTAB section) to see whether that element was targeted, and to verify the US filing dates of US 2007/0238471 A1 and US 2008/0104219 A1 before they are used in any chart.

US Patent 8230101, titled "Server device for media, method for controlling server for media, and program," has a filing date of March 2, 2007, and an issue date of July 24, 2012.

Patent Term Adjustments (PTA)

Patent Term Adjustment (PTA) is granted to compensate patent applicants for certain administrative delays by the USPTO during patent prosecution. For US8230101, which was filed after May 29, 2000, PTA provisions apply. The USPTO automatically determines and issues a notice of PTA with the patent. While the exact PTA granted for US8230101 is not explicitly stated in the provided information, the patent record shows an "Adjusted expiration" date of 2027-09-23. The standard patent term is 20 years from the earliest filing date.

Patent Term Extensions (PTE)

Patent Term Extensions (PTE) under 35 U.S.C. § 156 are available for patents claiming certain human drug products, medical devices, animal drugs, veterinary biological products, and food or color additive products, to restore time lost during premarket regulatory review by a government agency. There is no indication in the patent record or provided search results that US8230101 relates to any such products that would qualify for a PTE.

Continuation and Divisional Applications

• Continuation applications are subsequent applications that claim priority to an earlier non-provisional application, disclosing and claiming subject matter from the earlier application.
• Divisional applications arise when an applicant restricts an application to one invention when two or more independent and distinct inventions are claimed in one application, with the divisional application retaining the benefit of the filing date of the original application.

The provided patent information does not explicitly list any continuation or divisional applications for US8230101. However, the publication number US20100121911A1 is listed as an "Other version" and a "Publication" of the family, indicating it is the patent application publication for US8230101B2.

Related Family Members

US8230101B2 is the granted patent. Its application number is US12/527,777, and it was published as US20100121911A1 [cite: Filing date, Publication date].

International family members, as listed in the patent information, include:

• WO2008108002A1 (PCT/JP2007/054603) [cite: Applications Claiming Priority, Family Applications, Country Status]
• EP2129118A4 (EP07738088A) [cite: Country Status, Also Published As]
• CN101627628B (CN200780051973.6A) [cite: Country Status, Also Published As]
• DE07738088T1 (DE07738088T) [cite: Country Status, Also Published As]

Projected Expiration Date

The original patent term for applications filed on or after June 8, 1995, is 20 years from the filing date.

• Filing Date: 2007-03-02
• 20-year term expiration: 2027-03-02

However, the Google Patents information for US8230101 explicitly states an "Adjusted expiration" date of 2027-09-23 [cite: Legal status]. This adjusted date includes any Patent Term Adjustment (PTA) granted to compensate for USPTO delays during prosecution. Therefore, the projected expiration date for US8230101 is September 23, 2027.