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The patent EP4056150 was granted to Edwards Lifesciences on Feb 26, 2025. The application was filed on Jun 8, 2009 under application number EP22160976A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
An implantable prosthetic valve for treating heart valve disease, comprising a radially collapsible and expandable frame, a leaflet structure, and an annular skirt member. The skirt member is made of a highly elastic material, such as silicon, that can be crimped to a small diameter and expanded to a larger diameter without significant damage. The skirt member is disposed between the frame and the leaflet structure, and provides structural support, sealing, and protection against damage during crimping and valve operation.

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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