IP Verse

Process For Preparing A Cyclic Diene

Patent No. EP4405323 (titled "Process For Preparing A Cyclic Diene") was filed by Firmenich on Nov 24, 2022. The application was issued on Jan 14, 2026.

Patent Summary

Patent Family

Patent family tree
Statuses, jurisdictions and citation links are shared on request.

Patent Oppositions

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
GIVAUDANOct 14, 2026HASELTINE LAKE KEMPNER

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

  • Date

    Description

EP4405323

FIRMENICH
Application Number
EP22822032A
Filing Date
Nov 24, 2022
Status
Granted And Under Opposition
Dec 12, 2025
Publication Date
Jan 14, 2026
External Links
Slate, Register , Google Patents