Originally posted by Chris Li
All other political stuff aside, I would think that it would be quite difficult to establish exclusive trademark rights to the kamon that Toyoda used. The one pictured on the pages is "sagari-fuji" ("weeping wisteria"), used by the Fujiwara family originally, and very popular in Japan. I'm sure that tens of thousands of Japanese families use the exact same crest.
You are quiet right, Chris.