The weekly litigation news digest is live. Subscribe now

Polyvinyl Alcohol And Purification Method Thereof - EP3050905

The patent EP3050905 was granted to Chang Chun Petrochemical on Nov 22, 2017. The application was originally filed on Jan 27, 2016 under application number EP16152864A. The patent is currently recorded with a legal status of "Revoked".

EP3050905

CHANG CHUN PETROCHEMICAL
Application Number
EP16152864A
Filing Date
Jan 27, 2016
Status
Revoked
Jan 10, 2020
Publication Date
Nov 22, 2017
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

Get instant alerts for new oppositions and patent status changes

HOFFMANN EITLEAug 9, 2018- -

Patent Citations (7) New

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

Citation PhasePublication Number
DESCRIPTIONCN101357956
OPPOSITIONJP2013028712
OPPOSITIONUS2012329949
OPPOSITIONUS6080814
SEARCHCN101357956
SEARCHEP1516889
SEARCHEP2543692

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