The weekly litigation news digest is live. Subscribe now

IP Verse

Polyester, Method For Their Preparation And Their Use - EP3222647

The patent EP3222647 was granted to Weylchem Wiesbaden on Oct 17, 2018. The application was filed on Feb 9, 2017 under application number EP17000203A. The patent is currently recorded with a legal status of "Revoked".

EP3222647

WEYLCHEM WIESBADEN
Application Number
EP17000203A
Filing Date
Feb 9, 2017
Status
Revoked
Aug 13, 2021
Publication Date
Oct 17, 2018
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

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 DateRepresentativeOpposition Status
CLARIANT PRODUKTE DEUTSCHLANDJul 17, 2019RIPPELADMISSIBLE

Patent Citations (22) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONDE19906367
DESCRIPTIONEP0442101
DESCRIPTIONEP1966273
DESCRIPTIONEP2504380
DESCRIPTIONEP2552994
DESCRIPTIONUS4427557
DESCRIPTIONUS4702857
DESCRIPTIONUS4721580
DESCRIPTIONUS4968451
DESCRIPTIONUS5415807
DESCRIPTIONUS5599782
DESCRIPTIONUS5691298
DESCRIPTIONWO2011063944
DESCRIPTIONWO9422937
DESCRIPTIONWO9618715
DESCRIPTIONWO9805747
OPPOSITIONDE102008028409
OPPOSITIONUS4877896
OPPOSITIONWO2011063944
OPPOSITIONWO9502030
SEARCHDE102008028409
SEARCHWO2011063944

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