2 ms·

So, ..., you are right they can be established, but the interplay with registered trademarks is complicated. Here's a reasonable article on it: http://www.fr.c

• talideon 10y ago
  I know. That was why I wrote "even though it's a good idea to do so, if only for the sake of clarity". Registration makes trademark ownership clear. It's not essential, but a really good idea.