Patent No. EP2702164 (titled "A Method For Reducing Heterogeneity Of Antibodies And A Process Of Producing The Antibodies Thereof") was filed by Biocon Research on Apr 27, 2012. The application was issued on Mar 16, 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 |
|---|---|---|
| UCB BIOPHARMA SPRL | Aug 25, 2016 | UCB INTELLECTUAL |
| F HOFFMANN LA ROCHE | Aug 25, 2016 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
| GRAF VON STOSCH PATENTANWALTSGESELLSCHAFT | Aug 25, 2016 | GRAF VON STOSCH |
| BETTENHAUSEN | Aug 24, 2016 | RUCKERL |
| HOFFMANN EITLE | Aug 24, 2016 | HOFFMANN EITLE |
| JAMES POOLE | Aug 24, 2016 | GOODFELLOW |
| MAIWALD PATENTANWALTS | Aug 24, 2016 | NEUEFEIND |
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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