Patent No. EP2654789 (titled "Antibodies Against Human Cd39 And Use Thereof") was filed by Inserm Institut National DE LA Sant ET DE LA Recherche Mdicale on Dec 21, 2011. The application was issued on May 30, 2018.

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 |
|---|---|---|
| BOULT WADE TENNANT | Feb 28, 2019 | BOULT WADE TENNANT |
| D YOUNG | Feb 28, 2019 | HOIBERG PS |
| TIZONA THERAPEUTICS | Feb 26, 2019 | HUTTER |
| ABBVIE | Feb 15, 2019 | MEWBURN ELLIS |
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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