Patent No. EP3377534 (titled "Treatment Of Lung Cancer Using A Combination Of An Anti-Pd-1 Antibody And An Anti-Ctla-4 Antibody") was filed by Bristol Myers Squibb on Nov 18, 2016. The application was issued on Jun 18, 2025.

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 |
|---|---|---|
| POHLMAN | Mar 18, 2026 | POHLMAN |
| PAJARO | Mar 17, 2026 | BIRD & BIRD |
| DEVA HOLDING | Mar 11, 2026 | - |
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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