: A multinational healthcare company
Type of Search: Invalidation search, to
search Japanese prior art to invalidate a Europe patent
Field of Technology: Pharmaceutical/biotechnology
Brief Description of the Target Patent to be Invalidated:
The invention disclosed in the target patent relates to the
manufacturing of a physiologically active protein by culturing
transformed animal cells. The target patent was filed in Oct.
1998, with a priority date of Apr. 1997.
Search Strategy: Search both Japanese patents
and non-patent literature. Considering the physiologically
active protein in the target patent is a very unique protein
that has well defined terminology in Japanese, and our preliminary
search using these terminologies generated about 2500 hits,
we decided to use full text search with a few sets of Japanese
key word string combinations.
Result: Uncovered 5 Japanese patent documents
that are considered to be relevant art. Out of the 5 Japanese
prior art uncovered, one document was particularly pertinent,
which anticipates the claims of the target patent.