Patent No. EP3154233 (titled "Measurement Device And Method For Detection Of Simultaneous Duplicate Transmission") was filed by Rohde & Schwarz on May 9, 2014. The application was issued on Mar 17, 2021.

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 |
|---|---|---|
| PARK AIR SYSTEMS | Jun 13, 2018 | COZENS |
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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