Case Studies: Japanese Prior Art Search

Biotech Communication Optical communication
Machinery Electronics Pharmaceutical
Business model Medical Device Computer
Pharmaceutical Biotechnology Semi-conductor
Invalidation Search: Pharmaceutical
Non-patent literature

A major pharmaceuticalcompany in the US

Type of Search:
Invalidation search, to search Japanese non-patent literature to invalidate a US patent filed by a Japanese pharmaceuticalcompany.

Field of Technology:

Brief Description of the Target Patent to be Invalidated:
The target patent relates to use a compound for the treatment of an autoimmune disorder. The target patent has a foreign application priority date of 1994. USPTO has granted a patent for this application.

Search Strategy:
Search Japanese non-patent literatures including presentations, posters, conference preprints, etc. using JSTPlus, JMEDPlus, and Medical Online.

Key word string combination search, CAS No. and Nikaji No. search, compound IUPAC name search, and researcher name search, etc. were performed.

The searches generated 587 hits. After screening these hits by reviewing abstracts of these hits, we narrowed down the hits to 46. After a thorough reviewing for the full copies of these 46 Japanese literatures a clinical study short report published in Japanese at a conference preprint was uncovered. This report was published in 1993, 8 months earlier than the claimed priority date of the target patent. Based on the results disclosed in this report, a person skilled in the art may anticipate the claimed invention in the target patent.

Thank you kindly for the speedy delivery. I will be sure to advise the client of your remarks regarding the translation. I will also make sure that the reviewer has this information available. I can’t say thank you enough. You have done a great job.

- John Hall, Texas