Patent No. EP2308425 (titled "Percutaneous Heart Valve Prosthesis") was filed by Percutaneous Cardiovascular Solutions on Mar 11, 2005. The application was issued on Oct 18, 2023.

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 |
|---|---|---|
| ABBOTT CARDIOVASCULAR SYSTEMS, INC. | Nov 19, 2019 | LKGLOBAL LORENZ & KOPF |
| MEDTRONIC | Nov 18, 2019 | ZIMMERMANN & 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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