Patent 8315640

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.

Cases on file (0)

Specific litigation cases in our database that name US patent 8315640. The free-form analysis below may also discuss cases beyond this list.

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Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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The previous section already detailed the two IPR proceedings (IPR2014-00277 and IPR2014-00278) which resulted in the cancellation of all claims and were affirmed by the Federal Circuit. The litigation listed below focuses on district court cases and associated appeals, as indicated by the Google Patents links.

Here is a summary of known litigation involving US Patent 8315640, primarily asserted by Wi-LAN Inc. or its subsidiaries:

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. [Apple Inc.](/litigations/by-plaintiff/Apple%20Inc.)

    • Jurisdiction: Initially filed in Florida Southern District Court, then transferred to California Southern District Court.
    • Case Number: 1:12-cv-24318 (S.D. Fla.), subsequently 3:13-cv-00798 (S.D. Cal.)
    • Filing Date: December 6, 2012 (S.D. Fla.)
    • Outcome/Current Status: The California Southern District Court ruled that Apple did not infringe the patent on January 8, 2015. Wi-LAN appealed this decision. The Federal Circuit, in WI-LAN USA, INC. v. APPLE INC., No. 15-1256 (Fed. Cir. 2016), affirmed the district court's construction of certain terms, upholding the summary judgment of non-infringement. Separately, another Federal Circuit appeal, APPLE INC. v. WI-LAN INC., No. 20-2011 (Fed. Cir. 2022), related to patents including claim 1 of US 8,537,757, upheld findings of infringement of a patent directed to allocating bandwidth in a wireless communication system, but remanded for a new trial on damages. This may be a related patent, but 8315640 was specifically mentioned in the 3:13-cv-00798 case. It's important to note the Federal Circuit affirmed the lower court's non-infringement ruling for the '640 patent in the 15-1256 case.

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. HTC Corporation and HTC America, Inc.

    • Jurisdiction: Florida Southern District Court
    • Case Number: 1:12-cv-24319-KMM
    • Filing Date: December 6, 2012
    • Outcome/Current Status: The previous IPR section indicates that HTC Corp. was a petitioner in IPR2014-00278, which invalidated claims 1-28 of US8315640. This district court case likely led to or ran in parallel with that IPR. Specific outcome of this district court case for US8315640 is not explicitly detailed in the provided search results beyond its filing.

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. Sierra Wireless America, Inc.

    • Jurisdiction: Florida Southern District Court
    • Case Number: 1:12-cv-24320-KMM
    • Filing Date: December 6, 2012
    • Outcome/Current Status: The specific outcome for US8315640 in this case is not detailed in the provided search results beyond its filing.

  • Case: Wi-LAN USA, Inc. et al v. Alcatel-Lucent USA Inc.

    • Jurisdiction: Florida Southern District Court
    • Case Number: 1:12-cv-23568
    • Filing Date: October 1, 2012
    • Outcome/Current Status: The specific outcome for US8315640 in this case is not detailed in the provided search results beyond its filing.

  • Case: Wi-LAN USA, Inc. et al v. LG Electronics, Inc. et al.

    • Jurisdiction: Southern District of Florida
    • Case Number: 1:12-cv-23611
    • Filing Date: October 3, 2012
    • Outcome/Current Status: The specific outcome for US8315640 in this case is not detailed in the provided search results beyond its filing.

  • Case: Apple Inc. v. Wi-LAN Inc., et al.

    • Jurisdiction: Southern District of California
    • Case Number: 3:14-cv-02235
    • Filing Date: September 19, 2014
    • Outcome/Current Status: This case was consolidated with Wi-LAN Inc. v. Apple Inc. (3:14-cv-01507). The previous IPR section notes that Apple Inc. was a petitioner in IPR2014-00277, which invalidated claims 1-28 of US8315640.

  • Case: Wi-LAN Inc. v. Apple Inc.

    • Jurisdiction: Southern District of California
    • Case Number: 3:14-cv-01507
    • Filing Date: June 23, 2014
    • Outcome/Current Status: This case was consolidated with Apple Inc. v. Wi-LAN Inc., et al. (3:14-cv-02235).

  • Case: Wi-LAN USA, Inc. et al v. Ericsson Inc. and Telefonaktiebolaget L M Ericsson

    • Jurisdiction: California Southern District Court
    • Case Number: 3:13-cv-00871
    • Filing Date: April 11, 2013
    • Outcome/Current Status: The specific outcome for US8315640 in this case is not detailed in the provided search results beyond its filing.

  • Case: Wi-LAN USA, Inc. et al v. Sierra Wireless America, Inc.

    • Jurisdiction: California Southern District Court
    • Case Number: 3:13-cv-00843
    • Filing Date: April 8, 2013
    • Outcome/Current Status: The specific outcome for US8315640 in this case is not detailed in the provided search results beyond its filing.

  • Case: Wi-LAN Inc. v. Apple Inc.

    • Jurisdiction: U.S. Court of Appeals for the Federal Circuit
    • Case Number: 15-1256
    • Filing Date: Not explicitly provided in snippet, but the decision was issued in 2016.
    • Outcome/Current Status: Federal Circuit affirmed the district court's summary judgment of noninfringement. This likely relates to the appeal of 3:13-cv-00798 (S.D. Cal.).

  • Case: Wi-LAN Inc. v. Apple Inc. (Supreme Court)

    • Jurisdiction: U.S. Supreme Court
    • Case Number: 16-913
    • Filing Date: Not explicitly provided in snippets.
    • Outcome/Current Status: This case number appears in the Google Patents listing but specific details about its nature or outcome related to US8315640 are not in the provided search results. The results for "16-913" are primarily about unrelated Supreme Court cases (e.g., Wisconsin election laws). It is possible this docket number is a general reference or for a petition for certiorari that was denied, or for another patent in Wi-LAN's portfolio.

  • Case: Apple Inc. v. Wi-LAN Inc. (Federal Circuit)

    • Jurisdiction: U.S. Court of Appeals for the Federal Circuit
    • Case Number: 20-2011
    • Filing Date: Not explicitly provided in snippets, but decision was February 4, 2022.
    • Outcome/Current Status: The Federal Circuit upheld findings of infringement of a patent directed to allocating bandwidth in a wireless communication system (specifically claims 9, 26, and 27 of US 8,457,145 and claim 1 of US 8,537,757), but reversed and remanded for a new trial on damages. While this case involves Wi-LAN and Apple and related subject matter, the provided search results indicate it concerns US 8,457,145 and US 8,537,757, not specifically US8315640.

  • Case: CAFC Docket No. 15-1959 and 15-1960

    • Plaintiff(s): Wi-LAN Inc.
    • Defendant(s): Apple Inc. (15-1959), HTC Corp. (15-1960)
    • Jurisdiction: U.S. Court of Appeals for the Federal Circuit
    • Filing Date: Not explicitly provided in the snippets.
    • Outcome/Current Status: These are appeals of the IPR decisions (IPR2014-00277 and IPR2014-00278, respectively). The Federal Circuit affirmed the PTAB's decisions, upholding the unpatentability of claims 1-28 of US8315640. This information was extensively covered in the "PTAB challenges" section.

Note on IPR-related appeals vs. direct infringement appeals: The previous sections clearly detail the Federal Circuit affirmation of the PTAB's cancellation of claims 1-28 for US8315640 in CAFC Dockets 15-1959 (Apple) and 15-1960 (HTC). The CAFC case 15-1256 (Wi-LAN v. Apple) appears to be a separate appeal from a district court summary judgment of non-infringement for US8315640, where the Federal Circuit also affirmed non-infringement based on claim construction. The CAFC case 20-2011 (Apple v. Wi-LAN) is explicitly stated to involve US 8,457,145 and US 8,537,757, not US8315640. Therefore, while Wi-LAN has been actively litigating, the specific claims of US8315640 have been consistently found unpatentable or not infringed.Known litigation involving US patent 8315640 primarily consists of infringement actions initiated by Wi-LAN Inc. and subsequent appeals, as well as inter partes review (IPR) proceedings. While the IPRs (IPR2014-00277 and IPR2014-00278) ultimately led to the cancellation of all claims of US8315640 and were affirmed by the Federal Circuit (CAFC Dockets 15-1959 and 15-1960), the following summarizes other known district court litigation and associated appeals where US8315640 was asserted:

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. Apple Inc.

    • Plaintiff(s): Wi-LAN USA, Inc. and Wi-LAN, Inc.
    • Defendant(s): Apple Inc.
    • Jurisdiction: Initially U.S. District Court for the Southern District of Florida, transferred to U.S. District Court for the Southern District of California.
    • Case Number: 1:12-cv-24318-KMM (S.D. Fla.); 3:13-cv-00798-DMS-BLM (S.D. Cal.)
    • Filing Date: December 6, 2012 (S.D. Fla.)
    • Outcome/Current Status: The Southern District of California ruled that Apple did not infringe on January 8, 2015. Wi-LAN appealed this decision to the Federal Circuit. The Federal Circuit, in WI-LAN USA, INC. v. APPLE INC., No. 15-1256 (Fed. Cir. 2016), affirmed the district court's judgment of noninfringement.

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. HTC Corporation and HTC America, Inc.

    • Plaintiff(s): Wi-LAN USA, Inc. and Wi-LAN, Inc.
    • Defendant(s): HTC Corporation and HTC America, Inc.
    • Jurisdiction: U.S. District Court for the Southern District of Florida.
    • Case Number: 1:12-cv-24319-KMM
    • Filing Date: December 6, 2012
    • Outcome/Current Status: Specific outcome not detailed in available search results, but HTC Corp. was a petitioner in IPR2014-00278, which invalidated claims 1-28 of US8315640.

  • Case: Wi-LAN USA, Inc. and Wi-LAN, Inc. v. Sierra Wireless America, Inc.

    • Plaintiff(s): Wi-LAN USA, Inc. and Wi-LAN, Inc.
    • Defendant(s): Sierra Wireless America, Inc.
    • Jurisdiction: U.S. District Court for the Southern District of Florida.
    • Case Number: 1:12-cv-24320-KMM
    • Filing Date: December 6, 2012
    • Outcome/Current Status: Specific outcome not detailed in available search results.

  • Case: Wi-LAN USA, Inc. et al v. Alcatel-Lucent USA Inc.

    • Plaintiff(s): Wi-LAN USA, Inc. et al.
    • Defendant(s): Alcatel-Lucent USA Inc.
    • Jurisdiction: U.S. District Court for the Southern District of Florida.
    • Case Number: 1:12-cv-23568-CMA
    • Filing Date: October 1, 2012
    • Outcome/Current Status: Specific outcome not detailed in available search results.

  • Case: Wi-LAN USA, Inc. et al v. LG Electronics, Inc. et al.

    • Plaintiff(s): Wi-LAN USA, Inc. et al.
    • Defendant(s): LG Electronics, Inc. et al.
    • Jurisdiction: Southern District of Florida.
    • Case Number: 1:12-cv-23611
    • Filing Date: October 3, 2012
    • Outcome/Current Status: Specific outcome not detailed in available search results.

  • Case: Apple Inc. v. Wi-LAN Inc., et al.

    • Plaintiff(s): Apple Inc.
    • Defendant(s): Wi-LAN Inc., et al.
    • Jurisdiction: U.S. District Court for the Southern District of California.
    • Case Number: 3:14-cv-02235
    • Filing Date: September 19, 2014
    • Outcome/Current Status: This case was consolidated with Wi-LAN Inc. v. Apple Inc. (3:14-cv-01507).

  • Case: Wi-LAN Inc. v. Apple Inc.

    • Plaintiff(s): Wi-LAN Inc.
    • Defendant(s): Apple Inc.
    • Jurisdiction: U.S. District Court for the Southern District of California.
    • Case Number: 3:14-cv-01507
    • Filing Date: June 23, 2014
    • Outcome/Current Status: This case was consolidated with Apple Inc. v. Wi-LAN Inc., et al. (3:14-cv-02235).

  • Case: Wi-LAN USA, Inc. et al v. Ericsson Inc. and Telefonaktiebolaget L M Ericsson

    • Plaintiff(s): Wi-LAN USA, Inc. et al.
    • Defendant(s): Ericsson Inc. and Telefonaktiebolaget L M Ericsson
    • Jurisdiction: California Southern District Court
    • Case Number: 3:13-cv-00871
    • Filing Date: April 11, 2013
    • Outcome/Current Status: Specific outcome not detailed in available search results.

  • Case: Wi-LAN USA, Inc. et al v. Sierra Wireless America, Inc.

    • Plaintiff(s): Wi-LAN USA, Inc. et al.
    • Defendant(s): Sierra Wireless America, Inc.
    • Jurisdiction: California Southern District Court
    • Case Number: 3:13-cv-00843
    • Filing Date: April 8, 2013
    • Outcome/Current Status: Specific outcome not detailed in available search results.

  • Case: Wi-LAN Inc. v. Apple Inc.

    • Plaintiff(s): Wi-LAN Inc.
    • Defendant(s): Apple Inc.
    • Jurisdiction: U.S. Supreme Court
    • Case Number: 16-913
    • Filing Date: Not explicitly provided in search results.
    • Outcome/Current Status: The provided search results for this case number generally relate to unrelated Supreme Court matters, making it unclear if this specific docket is relevant to US8315640 or if it represents a petition for certiorari that was denied.

Generated 5/29/2026, 8:54:40 PM