Patent No. EP3021924 (titled "Microcatheter With Modified Ptfe Liner") was filed by Covidien LP on Jul 10, 2014. The application was issued on Mar 13, 2019.

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.
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