Q&A: How And When To Fix Inventor Information In A PCT-JP Application

In another article, we discussed how to fix various substantive errors in the description of a PCT application when entering the Japanese national phase. This time we will shed some light on what an applicant who wants to enter Japan's national phase should do with formality errors or updates in inventor information on a PCT international application.

The rule of thumb in short should be that once a PCT international application is entered in Japan, the inventor data cannot be changed easily, so it is best to have a Recording of Changes filed under the PCT Rule 92bis before entry in the Japanese national phase. Depending on your situation, the following details may be, we hope, useful to you.