Patent No. EP3539548 (titled "Composition For Inducing Proliferation Or Accumulation Of Regulatory Cells") was filed by The University OF Tokyo on Jun 3, 2011. The application was issued on Apr 29, 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 |
|---|---|---|
| NESTLE | Jan 29, 2021 | ELKINGTON AND FIFE |
| POTTER CLARKSON | Jan 29, 2021 | - |
| RIECK | Jan 29, 2021 | FUCHS PATENTANWALTE PARTNERSCHAFT MBB |
| STRAWMAN | Jan 29, 2021 | - |
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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