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.
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.