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Controlled Release Pharmaceutical Composition

PatentPatent Analysis

EP2554168

ASTELLAS PHARMA
Application Number
EP11762748A
Filing Date
Mar 28, 2011
Status
Revoked
Jul 10, 2020
Grant Date
Jan 24, 2018
External Links
Slate, Register, Google Patents
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Biblio Summary

The patent EP2554168B1 was granted to Astellas Pharma on Jan 24, 2018 following the initial filing on Mar 28, 2011 under the application number EP11762748A . The current legal status of the patent is Revoked.

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Patent Oppositions filed by Competitors

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 DateOpposition Status

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ALFRED E TIEFENBACHEROct 24, 2018 -
HEXALOct 24, 2018 -
LEDERER & KELLER PATENTANWALTE PARTNERSCHAFT MBBOct 24, 2018 -
STADA ARZNEIMITTELOct 24, 2018 -

Dossier Documents of the Patent

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