Patent No. EP2515871 (titled "Solid Pharmaceutical Dosage Form") was filed by Ratiopharm on Dec 20, 2010. The application was issued on Sep 23, 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 |
|---|---|---|
| HEXAL | Jun 23, 2016 | HERZBERG |
| ZENTIVA GROUP | Jun 23, 2016 | CASALONGA |
| GENERICS UK TRADING MYLAN | Jun 23, 2016 | GILL JENNINGS & EVERY |
| KRKA | Jun 23, 2016 | ANDRAE WESTENDORP |
| WUESTHOFF & WUESTHOFF PATENTANWALTE PARTG MBB | Jun 23, 2016 | WICHMANN |
| GALENICUM HEALTH SLU | Jun 22, 2016 | GALENICUM HEALTH SLU |
| STADA ARZNEIMITTEL | Jun 21, 2016 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| SANOVEL IIAC SAN VE TIC | Jun 14, 2016 | KRAUS & LEDERER PARTGMBB |
| ALFRED E TIEFENBACHER | Jun 3, 2016 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
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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