Patent No. EP2419108 (titled "Method For On-Demand Contraception") was filed by Laboratoire HRA Pharma on Apr 13, 2010. The application was issued on Aug 17, 2016.

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 |
|---|---|---|
| EGIS | May 17, 2017 | STOLMAR & PARTNER |
| GENERICS UK | May 17, 2017 | TER MEER UND PARTNER |
| MUTLU | May 17, 2017 | MUTLU |
| HEXAL PHARMA AG | May 15, 2017 | MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH |
| STADA ARZNEIMITTEL | May 15, 2017 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| HELM AG | May 10, 2017 | UEXKULL & STOLBERG |
| TEVA PHARMACEUTICAL INDUSTRIES LTD | Apr 20, 2017 | BEST |
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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