A Security Sheet Or Document Having One Or More Enhanced Watermarks
Patent No. EP4163888 (titled "A Security Sheet Or Document Having One Or More Enhanced Watermarks") was filed by Crane on Dec 2, 2014. The application was issued on Jul 3, 2024.
Patent Summary
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Patent Oppositions (2)
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.
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Date
Description
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EP4163888
- Application Number
- EP22210172A
- Filing Date
- Dec 2, 2014
- Status
- Granted And Under Opposition
- May 31, 2024
- Publication Date
- Jul 3, 2024
- External Links
- Slate, Register , Google Patents