The Weekly Litigation News Digest is now live. Subscribe now
Polysulfone Copolymer With Excellent Heat Resistance And Chemical Resistance, And Method For Preparing Same - EP3170855
The patent EP3170855 was granted to Samyang on Jun 9, 2021. The application was originally filed on Aug 24, 2015 under application number EP15835779A. The patent is currently recorded with a legal status of "Revoked".
EP3170855
- Application Number
- EP15835779A
- Filing Date
- Aug 24, 2015
- Status
- Revoked
- Mar 10, 2023
- Publication Date
- Jun 9, 2021
- External Links
- Slate, Register, Google Patents
Patent Summary
Patent Family
Patent Oppositions (2)
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.
Patent Citations (8) New
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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
Get instant alerts for new documents