Patent No. EP4150127 (titled "Finishing Method And System For Tanned Or Synthetic Hides") was filed by Todesco on May 13, 2021. The application was issued on Oct 8, 2025.
A method for finishing tanned, synthetic, or animal-origin leather (P) comprises providing the leather and irradiating it with UV rays to activate a photopolymerisable composition. The process involves depositing one or more layers of said composition onto the leather in a scattered, non-point manner via spraying, roller, glazing, or buffer prior to irradiation. The photopolymerisable composition is an aqueous solution or dispersion comprising (A) at least one photopolymerisable compound and (B) at least one photoactivating agent, and optionally (C) a crosslinking agent, (D) a pigmenting agent, and (E) further additives. This UV-curing approach avoids high-temperature drying tunnels, preventing collagen deterioration, fiber shrinkage, and leather hardening while reducing energy consumption and processing time.

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.
Date
Description