Patent No. EP2968549 (titled "Methods Of Cell Culture") was filed by Momenta Pharmaceuticals on Mar 12, 2014. The application was issued on Nov 23, 2022.

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 |
|---|---|---|
| BAYER | Jan 31, 2020 | BIP PATENTS |
| REGENERON PHARMACEUTICALS | Jan 31, 2020 | GRUNECKER PATENT |
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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