Patent No. EP3400979 (titled "Systems And Devices For Sustained Delivery Of A Therapeutic Fluid") was filed by F Hoffmann LA Roche on Dec 20, 2007. The application was issued on Nov 6, 2019.

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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