Patent No. EP2665686 (titled "Method For The Biological Treatment Of Wastewater Using An Aerobic Granular Biomass") was filed by Institut National DES Sciences Appliques DE Toulouse on Jan 18, 2012. The application was issued on Aug 1, 2018.

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 |
|---|---|---|
| HASKONINGDHV NEDERLAND | Apr 30, 2019 | NEDERLANDSCH OCTROOIBUREAU |
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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