Patent No. EP3420063 (titled "Detergent Or Cleaning Agent Having An Improved Antimicrobial Effect") was filed by Henkel on Feb 20, 2017. The application was issued on Sep 15, 2021.

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 |
|---|---|---|
| GRUPO AC MARCA | Jun 14, 2022 | GILLE HRABAL PARTNERSCHAFTSGESELLSCHAFT MBB PATENTANWALTE |
| RECKITT BENCKISER | Jun 14, 2022 | PAREDES ROJAS |
| THE PROCTER & GAMBLE | May 20, 2022 | P&G PATENT BELGIUM UK |
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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