Patent No. EP2611422 (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 Oct 31, 2018.

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 |
|---|---|---|
| SANDOZ | Jul 31, 2019 | MAIWALD |
| SANDOZ | Jul 31, 2019 | MAIWALD PATENT UND RECHTSANWALTSGESELLSCHAFT |
| HGF | Jul 24, 2019 | HGF |
| TEVA UK | Jun 14, 2019 | ELKINGTON AND FIFE |
| TEVA PHARMACEUTICALS | Jun 14, 2019 | 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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