Patent No. EP1379215 (titled "Cosmetic Compositions Containing A Starch Phosphate And A Cationic Polymer And Uses Thereof") was filed by L'Oreal on Mar 29, 2002. The application was issued on Sep 16, 2015.

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 |
|---|---|---|
| KAO GERMANY | Jun 16, 2016 | GRIT |
| BEIERSDORF | Jun 15, 2016 | - |
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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