Patent No. EP4151748 (titled "Spatially Distinguished, Multiplex Nucleic Acid Analysis Of Biological Specimens") was filed by Illumina on Apr 4, 2016. The application was issued on Dec 20, 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 |
|---|---|---|
| SKM SCHMID KRAUSS KUTTENKEULER MALESCHA SCHIELER PATENTANWALTE PARTGMBB | Sep 19, 2024 | KUTTENKEULER |
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