Patent No. EP3409272 (titled "Pharmaceutical Composition Comprising Eltrombopag Olamine, Reducing Sugar, And Polymeric Binder") was filed by Alfred E Tiefenbacher on Apr 26, 2018. The application was issued on Jun 24, 2020.

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 |
|---|---|---|
| BULLE DR | Mar 23, 2021 | KUTZENBERGER WOLFF & PARTNER |
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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