Finding a good trademark or patent firm in other countries is hard.
Where and how to find it would be a common concern to business owners.
If you can get a list of trademark and patent firms, it will save you valuable time and energy.
Here is an international directory of IP law firms and individual patent and trademark attorneys maintained by IP-Coster:
Clicking Japan from the IP-Listing, there is a list of Japanese patent and trademark firms, including us - Trademark Wagon Patent Attorney Office.