Patent 12406663
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)
Group view →Specific litigation cases in our database that name US patent 12406663. The free-form analysis below may also discuss cases beyond this list.
- Cerence Operating Company v. Amazon.com, Inc. et al.filed May 4, 20262:26-cv-00373U.S. District Court for the Eastern District of Texasinitial stages
Defendants: Amazon.com, Inc., Amazon.com Services LLC, and Amazon Web Services, Inc.
Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Litigation Search for U.S. Patent 12,406,663
Washington, D.C. - As of May 8, 2026, a search of federal court dockets has revealed that U.S. Patent No. 12,406,663 is asserted in a patent infringement lawsuit. The patent's assignee, Cerence Operating Co., has filed a complaint against Amazon.com, Inc. and its subsidiaries.
Details of the litigation are as follows:
- Case Title: Cerence Operating Company v. Amazon.com, Inc. et al.
- Plaintiff: Cerence Operating Company
- Defendants: 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-00373
- Filing Date: May 4, 2026
- Status: The case is currently in its initial stages, with the complaint having been recently filed.
The complaint alleges that Amazon's products and services, including its Echo devices and Alexa services, infringe upon multiple Cerence patents related to voice recognition and natural language processing technologies. U.S. Patent 12,406,663 is specifically listed as one of the asserted patents in the complaint. This lawsuit is one of two filed by Cerence against Amazon on the same day, targeting a range of technologies including speech recognition, text-to-speech, and acoustic modeling.
Generated 5/8/2026, 10:05:59 PM