Patent No. EP3239588 (titled "Method For Detecting A Substance") was filed by Felder on Apr 28, 2016. The application was issued on Sep 11, 2024.

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 |
|---|---|---|
| FESTOOL | May 10, 2022 | PATENTANWALTE MAGENBAUER & KOLLEGEN PARTNERSCHAFT MBB |
| BERK TEKNOENERJI ARASTIRMA VE GELISTIRME SANAYI VE TICARET | Apr 26, 2022 | DEMIRKIRAN |
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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