Litigation summary

Litigation History

U.S. Patent No. 11,121,222 ('222 patent), assigned to Greenthread, LLC, has been subject to extensive litigation, including numerous district court filings and inter partes review (IPR) proceedings before the Patent Trial and Appeal Board (PTAB). Greenthread, LLC has been the plaintiff in all identified district court cases, asserting the '222 patent and other related patents against a wide array of major technology and automotive companies. The patent's legal status is currently listed as "Expired - Fee Related," which may impact the resolution of any ongoing matters.

District Court Litigation

Greenthread has initiated multiple infringement lawsuits across various U.S. District Courts. A common pattern in these cases involves co-defendants from the semiconductor and electronics manufacturing sectors. Many of these district court cases have been stayed pending the outcome of the PTAB proceedings challenging the validity of the asserted patents.

• Plaintiff: Greenthread, LLC
  Defendants: Intel Corporation, Dell Inc., and Dell Technologies Inc.
  Jurisdiction: U.S. District Court for the Western District of Texas
  Case Number: 6:22-cv-00105
  Filing Date: January 27, 2022
  Status: Active, with various motions and claim construction proceedings having taken place.

• Plaintiff: Greenthread, LLC
  Defendant: NXP USA, Inc.
  Jurisdiction: U.S. District Court for the Western District of Texas
  Case Number: 6:22-cv-01293
  Status: The case is related to other actions filed by Greenthread.

• Plaintiff: Greenthread, LLC
  Defendant: General Motors Company
  Jurisdiction: U.S. District Court for the Western District of Texas
  Case Number: 1:23-cv-00369
  Status: Active.

• Plaintiff: Greenthread, LLC
  Defendant: Continental Automotive Systems, Inc.
  Jurisdiction: U.S. District Court for the District of Delaware
  Case Number: 1:23-cv-00326
  Status: The case is related to other actions filed by Greenthread.

• Plaintiff: Greenthread, LLC
  Defendant: Robert Bosch LLC
  Jurisdiction: U.S. District Court for the District of Delaware
  Case Number: 1:23-cv-00333
  Status: The case is related to other actions filed by Greenthread.

• Plaintiff: Greenthread, LLC
  Defendants: ON Semiconductor Corporation and Semiconductor Components Industries, LLC
  Jurisdiction: U.S. District Court for the District of Delaware
  Case Number: 1:23-cv-00443
  Filing Date: April 21, 2023
  Status: The case was stayed pending IPR proceedings and administratively closed on April 22, 2024.

• Plaintiff: Greenthread, LLC
  Defendant: Monolithic Power Systems, Inc.
  Jurisdiction: U.S. District Court for the District of Delaware
  Case Number: 1:23-cv-00579
  Filing Date: May 26, 2023
  Status: The case is related to ongoing IPR proceedings.

• Plaintiff: Greenthread, LLC
  Defendant: STMicroelectronics, Inc.
  Jurisdiction: U.S. District Court for the Eastern District of Texas
  Case Number: 2:23-cv-00157
  Status: This case is related to other infringement suits initiated by Greenthread.

• Plaintiff: Greenthread, LLC
  Defendant: Renesas Electronics America, Inc.
  Jurisdiction: U.S. District Court for the Eastern District of Texas
  Case Number: 2:23-cv-00179
  Status: This case involves allegations against a major semiconductor manufacturer.

• Plaintiff: Greenthread, LLC
  Defendant: OmniVision Technologies, Inc.
  Jurisdiction: U.S. District Court for the Eastern District of Texas
  Case Number: 2:23-cv-00212
  Filing Date: May 10, 2023
  Status: Active litigation with related IPR challenges.

Patent Trial and Appeal Board (PTAB) Litigation

Numerous IPR petitions have been filed against the '222 patent, challenging the validity of its claims. These proceedings are central to the overall litigation strategy, with district courts often waiting for the PTAB's decisions on patentability.

• IPR Number: IPR2023-00324
  Petitioner(s): Sony Group Corporation, Dell, Inc., et al.
  Status: Terminated - Settlement.

• IPR Number: IPR2023-00420
  Petitioner(s): Intel Corporation
  Status: Terminated - Settlement.

• IPR Number: IPR2023-00509
  Petitioner(s): Dell Technologies, Inc., and Dell, Inc.
  Status: Terminated - Settlement.

• IPR Number: IPR2023-00552
  Petitioner(s): Intel Corporation
  Status: Terminated - Settlement.

• IPR Numbers: IPR2023-01242, IPR2023-01244
  Petitioner(s): Semiconductor Components Industries, LLC (d/b/a onsemi), and ON Semiconductor Corporation. Texas Instruments Inc. was later joined as a petitioner.
  Status: A Final Written Decision was issued, but this was subsequently vacated by the Director, and the case was remanded to the Board for further proceedings as of April 2025. A request for rehearing of the Director's review was denied in May 2025.

• IPR Numbers: IPR2024-00020, IPR2024-00021
  Petitioner(s): Cirrus Logic, Inc., Omnivision Technologies, Inc., AMS Sensors USA, Inc., et al.
  Filing Date: October 27, 2023
  Status: A Final Written Decision found claim 44 unpatentable. Greenthread indicated it would file for Director Review. The broader case appears to have resulted in a settlement.

• IPR Number: IPR2024-00470
  Petitioner(s): Monolithic Power Systems Inc.
  Filing Date: February 3, 2024
  Status: Pending - Instituted.

• IPR Number: IPR2024-00552
  Petitioner(s): Monolithic Power Systems, Inc.
  Status: Pending - Instituted.

• IPR Numbers: IPR2024-00673, IPR2024-00674
  Petitioner(s): Texas Instruments Incorporated
  Filing Date: March 12, 2024
  Status: Texas Instruments filed these petitions and moved to be joined with the pending IPRs filed by onsemi (IPR2023-01242 and IPR2023-01244). The proceedings are ongoing.