Patent No. EP3567177 (titled "Method For The Preparation Of Sealing Strip Rolls") was filed by ISO Chemie on May 7, 2018. The application was issued on Mar 25, 2020.

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 |
|---|---|---|
| TREMCO CPG GERMANY | Dec 16, 2020 | HANNKE BITTNER & PARTNER MBB REGENSBURG |
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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