Patent No. EP2742606 (titled "Methods And Devices For Configuring Uplink Transmission Diversity During A Serving Cell Change") was filed by Telefonaktiebolaget LM Ericsson Publ on Sep 6, 2012. The application was issued on Jan 21, 2015.

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 |
|---|---|---|
| SONY GROUP | Oct 21, 2015 | MFG PATENTANWALTE MEYER WILDHAGEN MEGGLE FREUND GERHARD 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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