Patent No. EP1978034 (titled "Anti-Periostin Antibody And Pharmaceutical Composition For Preventing Or Treating Periostin-Related Disease Containing The Same") was filed by Asubio Pharma on Dec 28, 2006. The application was issued on May 16, 2018.

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.
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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