Abstract
In Japan and U.S.Patent Laws,the relation of publication and the patent application of the invention was revised.Moreover,novelty(publicly known in the world) was introduced in U.S.A.,and,in Japan,the protection of the joint researcher became more appropriate by this revision.The research and development strategy and the intellectualproperty strategy should be reviewed and restructured.The introduction of the first-to-file system in U.S.A.is alongtime pending issue,and it is thought that this revision is big progress.However,it is not complete first-to-file system.In addition,there are some other pending issues between Japan and the U.S.A.It is necessary to pay attention to the trend of the Patent Law revision in Japan and the United States in the future.