Patent No. EP3168332 (titled "Electrolytic Stripping Agent For Jig") was filed by Okuno Chemical Industries on Jan 29, 2016. The application was issued on Jul 26, 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 |
|---|---|---|
| ATOTECH DEUTSCHLAND | Dec 10, 2019 | MKS ASSOCIATION |
| MACDERMID | Dec 10, 2019 | JENKINS |
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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