Patent No. EP1381346 (titled "Aerosol Compositions Containing Formoterol For Delivery To The Lungs Via Nebulization") was filed by DEY LP on Feb 28, 2002. The application was issued on Nov 18, 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 |
|---|---|---|
| TEVA PHARMACEUTICAL INDUSTRIES LTD | Aug 18, 2016 | D YOUNG |
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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