Patent No. EP3336151 (titled "Set Of Ink And Cleaning Liquid, Inkjet Printing Method, And Inkjet Printing Device") was filed by Ricoh on Dec 14, 2017. The application was issued on Nov 8, 2023.

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 |
|---|---|---|
| AGFA GEVAERT | Nov 20, 2019 | LINGIER |
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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