Patent 11673805

Litigation summary

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

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PTAB activity (2)

AIA trial proceedings — IPR, PGR, CBM — filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced directly from the PTAB Trial API.

1 active
  • IPR2025-01174IPRfiled Jul 2, 2025vs. Topsoe, Inc. et al.Discretionary Denial
  • IPR2025-01173IPRfiled Jul 2, 2025vs. Topsoe, Inc. et al.Trial Instituted

Cached for 24 hours. Status strings are sourced verbatim from the PTAB API; the colored badge is our heuristic classification.

Cases on file (1)

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Specific litigation cases in our database that name US patent 11673805. 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 April 26, 2026, and updated to May 19, 2026, the following litigation is known involving US patent 11673805:

1. Inter Partes Review (IPR) Case IPR2025-01173

2. Inter Partes Review (IPR) Case IPR2025-01174

  • Plaintiff(s): TOPSOE, INC.
  • Defendant(s): L'Air Liquide SA pour l'Etude et l'Exploitation des Procedes Georges Claude (Patent Owner)
  • Jurisdiction: Patent Trial and Appeal Board (PTAB)
  • Case Number: IPR2025-01174
  • Filing Date: August 5, 2025 [cite: 1, Patents.google.com, Legal status section]
  • Current Status: Not Instituted - Procedural [cite: 1, Patents.google.com, Legal status section] (Arguments were made against institution due to the filing of multiple petitions challenging the same patent by the same party, which is generally disfavored by the PTAB.)

Generated 5/19/2026, 12:46:36 AM