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IP Verse

Polyarylene Ether Sulfone - EP3850033

The patent EP3850033 was granted to Basf on May 17, 2023. The application was originally filed on Sep 6, 2019 under application number EP19797539A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3850033

BASF
Application Number
EP19797539A
Filing Date
Sep 6, 2019
Status
Granted And Under Opposition
Apr 14, 2023
Publication Date
May 17, 2023
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

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.

CompanyOpposition DateRepresentativeOpposition Status

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SOLVAY SPECIALTY POLYMERS USAFeb 16, 2024VIOLAADMISSIBLE
SYENSQO SPECIALTY POLYMERS USAFeb 16, 2024VIOLAADMISSIBLE

Patent Citations (13) New

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

Citation PhasePublication Number
DESCRIPTIONUS2017240708
DESCRIPTIONUS7163987
DESCRIPTIONWO2014072473
INTERNATIONAL-SEARCH-REPORTEP1561768
INTERNATIONAL-SEARCH-REPORTEP3088442
INTERNATIONAL-SEARCH-REPORTEP3170855
INTERNATIONAL-SEARCH-REPORTWO2016066661
OPPOSITIONCN103506016
OPPOSITIONCN104327277
OPPOSITIONUS2015299395
OPPOSITIONUS2015322210
OPPOSITIONWO0225764
OPPOSITIONWO2017157933

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

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