Patent No. EP2506844 (titled "Combinations Of A Muscarinic Receptor Antagonist And A Beta-2 Adrenoreceptor Agonist") was filed by Glaxo Group on Nov 29, 2010. The application was issued on Dec 20, 2017.

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 |
|---|---|---|
| SIMA PATENT VE LISANSLAMA HIZMETLERI LTDSTI | Sep 20, 2018 | GILL JENNINGS & EVERY |
| BREUER | Sep 19, 2018 | BREUER |
| TEVA PHARMACEUTICALS | Sep 17, 2018 | ELKINGTON AND FIFE |
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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