That's not true. There's no need for a trademark to be registered or even to be indicated as being a trademark (typically by using 'TM'), though of course you d

That's not true. There's no need for a trademark to be registered or even to be indicated as being a trademark (typically by using 'TM'), though of course you do get extra rights if you do. The US Patent Office is a good resource for info: http://www.uspto.gov/trademarks/index.jsp http://www.uspto.gov/trademarks/index.jsp