Patent No. EP3988889 (titled "Housing For A Cartridge Magazine For A Handgun And Cartridge Magazine For A Handgun") was filed by Schmeisser on Dec 13, 2018. The application was issued on Nov 1, 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 |
|---|---|---|
| AC UNITY DOO | Jul 31, 2024 | MODIANO |
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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