Excellent video, Guido. I truly enjoyed that. Danke.

I served as a stocking import distributor for Kiso Suzuki guitars from Japan. It was nearly impossible to tell them from the original that they were copied from until you would actually play one of them.

In electronic circuitry, there is another factor that makes design enforcement exceedingly difficult. That is: All circuitry constitutes "an application of an existing patent" therefore not patentable on it's own merits.