Patent No. EP2370496 (titled "A Process For Preparing A Polymer Having A 2,5-Furandicarboxylate Moiety Within The Polymer Backbone And Such (Co)Polymers") was filed by Furanix on Dec 30, 2009. The application was issued on Dec 11, 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 |
|---|---|---|
| DUPONT INDUSTRIAL BIOSCIENCES USA | Mar 24, 2021 | MEWBURN ELLIS |
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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