Patent No. EP3265266 (titled "System For And Method Of Linking By Friction Welding A First Piece Of Steel To A Second Piece Of Steel With Use Of Ni-Based Alloys Adapter") was filed by John Cockerill on Mar 3, 2016. The application was issued on Jun 14, 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 |
|---|---|---|
| COCKERILL MAINTENANCE & INGENIERIE | Dec 17, 2020 | AWA BENELUX |
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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