Patent No. EP2936481 (titled "Insulation Element, Expanded Insulation Element, Use Of Same And Method For Insulation") was filed by Sika Technology on Dec 13, 2013. The application was issued on Feb 8, 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 |
|---|---|---|
| L & L PRODUCTS EUROPE | Nov 8, 2023 | KUTZENBERGER WOLFF & PARTNER |
| HENKEL | Oct 30, 2023 | KBN |
| HENKEL | Oct 30, 2023 | PATENTANWALTE BAUER VORBERG KAYSER |
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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