Patent No. EP3302565 (titled "Solid Dosage Forms Of Palbociclib") was filed by Pfizer on May 24, 2016. The application was issued on Nov 6, 2019.

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.
| Company | Opposition Date | Representative |
|---|---|---|
| GENERICS UK | Aug 6, 2020 | ELKINGTON AND FIFE |
| SYNTHON | Aug 6, 2020 | HAMM & WITTKOPP |
| GALENICUM HEALTH SLU | Aug 5, 2020 | GALENICUM HEALTH SLU |
| HEXAL | Aug 5, 2020 | TER MEER STEINMEISTER & PARTNER |
| HOFFMANN EITLE | Aug 4, 2020 | - |
| TEVA PHARMACEUTICALS | Aug 4, 2020 | KRAUS & LEDERER |
| TEVA PHARMACEUTICALS | Aug 4, 2020 | KRAUS & LEDERER PARTGMBB |
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.
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