Patent No. EP3536438 (titled "Methods For Joining Two Blanks And Blanks And Products Obtained") was filed by Autotech Engineering SL on Dec 16, 2016. The application was issued on Oct 22, 2025.

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 |
|---|---|---|
| VOESTALPINE AUTOMOTIVE COMPONENTS LINZ | Apr 21, 2022 | BRATOVIC |
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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