Patent No. EP3229799 (titled "Crystalline Forms Of Trisodium Supramolecular Complex Comprising Valsartan And Ahu-377 And Methods Thereof") was filed by Crystal Pharmatech on Dec 8, 2015. The application was issued on Oct 17, 2018.

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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