Patent No. EP3464373 (titled "Use Of Anti-Pd-1 Antibody In The Treatment Of Patients With Colorectal Cancer") was filed by Bristol Myers Squibb on Jun 2, 2017. The application was issued on Oct 27, 2021.

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 |
|---|---|---|
| GREINER | Jul 27, 2022 | GREINER |
| LEDERER & KELLER PATENTANWALTE PARTNERSCHAFT MBB | Jul 26, 2022 | LEDERER & KELLER PATENTANWALTE PARTNERSCHAFT MBB |
| MAIWALD | Jul 26, 2022 | MAIWALD |
| PAJARO | Jul 26, 2022 | BIRD & BIRD |
| POHLMAN | Jul 26, 2022 | POHLMAN |
| MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | Jul 25, 2022 | MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB |
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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