Patent No. EP2248265 (titled "Bit Permutation Patterns For Ldpc Coded Modulation And Qam Constellations") was filed by RAI Radiotelevisione Italiana on Mar 2, 2009. The application was issued on May 27, 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 |
|---|---|---|
| WITHERS & ROGERS LLPJONES NICHOLASWRIGHT HOWARD WALLIN NICHOLAS | Feb 26, 2016 | CABINET PLASSERAUD |
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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