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The patent EP2971040 was granted to Momenta Pharmaceuticals on Sep 19, 2018. The application was filed on Mar 12, 2014 under application number EP14775649A. The patent is currently recorded with a legal status of "Revoked".

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 | Opposition Status |
|---|---|---|---|
| DORRIES | Jun 19, 2019 | DORRIES | - |
| DORRIES | Jun 19, 2019 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN | - |
| HOFFMANN EITLE | Jun 19, 2019 | HOFFMANN EITLE | - |
| MAIWALD | Jun 19, 2019 | MAIWALD | - |
| NEUEFEIND | Jun 19, 2019 | MAIWALD | - |
| STRAWMAN | Jun 19, 2019 | D YOUNG | - |
| VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | Jun 19, 2019 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | - |
| BAYER | Jun 18, 2019 | HEMSATH | - |
| KELTIE | Jun 18, 2019 | MOORE | - |
| MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | Jun 17, 2019 | - | - |
| REGENERON PHARMACEUTICALS | Jun 13, 2019 | GRUNECKER PATENT | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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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