Patent No. EP2591103 (titled "Delivery Of Rna To Different Cell Types") was filed by Glaxosmithkline on Jul 6, 2011. The application was issued on Aug 28, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| SCHNAPPAUF | May 28, 2020 | - |
| JANSSEN VACCINES & PREVENTION | May 27, 2020 | MEWBURN ELLIS |
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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