Patent No. EP3879062 (titled "Seal Strip And Method Of Manufacturing The Same") was filed by Semperit Holding on Mar 3, 2021. The application was issued on Jan 18, 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 |
|---|---|---|
| GTG GUMMITECHNIK WOLFGANG BARTELT | Oct 18, 2023 | DR SOLF & ZAPF PATENT UND RECHTSANWALTS PARTG MBB |
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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