Patent No. EP2611423 (titled "Dry Powder Inhalation Drug Products Exhibiting Moisture Control Properties And Methods Of Administering The Same") was filed by Glaxosmithkline on Aug 31, 2011. The application was issued on Sep 21, 2022.

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 |
|---|---|---|
| GENERICS UK | Mar 24, 2016 | FRKELLY |
| TEVA UK LIMITED | Mar 24, 2016 | ELKINGTON AND FIFE |
| OSER | Mar 23, 2016 | MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH |
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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