Patent No. EP2186507 (titled "A Liquid Pharmaceutical Formulation Comprising Nicotine For The Administration To The Oral Cavity") was filed by Mcneil on Dec 18, 2002. The application was issued on Apr 1, 2015.

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 |
|---|---|---|
| ALIUD PHARMA | Mar 17, 2021 | HAMM&WITTKOPP PATENTANWÄLTE PARTMBB |
| FERTIN PHARMA | Jan 4, 2016 | HOFFMANN EITLE |
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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