Patent No. EP2729126 (titled "Liposomes Having Useful N:P Ratio For Delivery Of Rna Molecules") was filed by Glaxosmithkline on Jul 6, 2012. The application was issued on Dec 23, 2020.

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 |
|---|---|---|
| ACUITAS THERAPEUTICS | Sep 23, 2021 | VOSSIUS & PARTNER |
| ACUITAS THERAPEUTICS | Sep 23, 2021 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
| MARGARET DIXON | Sep 23, 2021 | MEWBURN ELLIS |
| MULLER | Sep 23, 2021 | MULLER |
| WEICKMANN & WEICKMANN | Sep 23, 2021 | WEICKMANN & WEICKMANN PARTMBB |
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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