Patent No. EP4058148 (titled "Dosing Regimen For Anti-Bcma Agents") was filed by Amgen on May 8, 2020. The application was issued on Mar 13, 2024.

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 |
|---|---|---|
| ABBVIE | Dec 13, 2024 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB DUSSELDORF |
| REGENERON PHARMACEUTICALS | Aug 2, 2024 | CARPMAELS & RANSFORD |
| STRAWMAN | Mar 15, 2024 | RCF PROTECTING INNOVATION |
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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