Patent No. EP3515465 (titled "Methods For Treating Severe Atopic Dermatitis By Administering An Il-4R Inhibitor") was filed by Regeneron Pharmaceuticals on Sep 21, 2017. The application was issued on Feb 7, 2024.

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 |
|---|---|---|
| BRAND MURRAY FULLER | Nov 7, 2024 | BRAND MURRAY FULLER |
| DORRIES | Nov 7, 2024 | DORRIES |
| DORRIES | Nov 7, 2024 | DORRIES, HANS ULRICH , DF-MP DORRIES FRANK-MOLNIA & POHLMAN |
| MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE MBB | Nov 7, 2024 | - |
| BOULT WADE TENNANT | Nov 6, 2024 | BOULT WADE TENNANT |
| RUMI | Nov 6, 2024 | TER MEER STEINMEISTER & PARTNER |
| SECERNA | Nov 6, 2024 | SECERNA |
| BOEHMERT & BOEHMERT ANWALTSPARTNERSCHAFT MBB | Nov 5, 2024 | ENGELHARD |
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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