Patent No. EP2386294 (titled "Unitary Pharmaceutical Dosage Form Comprising Tenofovir Df") was filed by Bristol Myers Squibb & Gilead Sciences on Jun 13, 2006. The application was issued on Mar 4, 2015.

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 |
|---|---|---|
| ACCORD HEALTHCARE | Dec 4, 2015 | ISARPATENT |
| HETERO DRUGS | Dec 4, 2015 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| SANDOZ | Dec 4, 2015 | TER MEER UND PARTNER |
| KELTIE | Dec 3, 2015 | MOORE |
| STRAWMAN | Dec 2, 2015 | 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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