Patent No. EP1054226 (titled "Improved Fin Collar And Method Of Manufacturing") was filed by Carrier on May 8, 2000. The application was issued on Oct 25, 2017.

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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