Patent No. EP3594239 (titled "Methods For Improving Safety Of Blood-Brain Barrier Transport") was filed by F Hoffmann LA Roche on May 20, 2013. The application was issued on Oct 30, 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 |
|---|---|---|
| ZWICKER SCHNAPPAUF & PARTNER | Jul 30, 2025 | ZWICKER |
| JAMES POOLE | Jul 16, 2025 | CARPMAELS & RANSFORD |
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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