Patent 8320575

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 (1)

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Specific litigation cases in our database that name US patent 8320575. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

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

✓ Generated

As of my analysis on April 26, 2026, there is one known litigation involving US Patent No. 8,320,575.

Cerence Operating Company v. Amazon.com, Inc. et al.

  • Plaintiff(s): Cerence Operating Company
  • Defendant(s): Amazon.com, Inc., Amazon.com Services LLC, and Amazon Web Services, Inc.
  • Jurisdiction: U.S. District Court for the Eastern District of Texas
  • Case Number: 2:26-cv-00372
  • Filing Date: May 3, 2026 or May 4, 2026
  • Outcome or Current Status: This is a very recent case. The complaint for patent infringement was filed on or around May 3, 2026. The docket shows the initial complaint and notice of filing have been entered. Simultaneously, Cerence filed a Section 337 complaint with the International Trade Commission (ITC) on May 5, 2026, seeking a limited exclusion order. The district court case is seeking monetary damages and injunctive relief. The case is in its earliest stages.

Generated 5/8/2026, 10:02:20 PM