by scirwode » Thu Feb 23, 2012 2:19 am
Whoa. Copyright and trademark are completely different laws. Copyright is almost universally recognized (160 countries and counting). Trademark laws are less harmonious. For instance you need not register a trademark in the USA in order to have protection, whereas most other countries require federal registration.
In most countries it's not necessary or even possible to register a copyright. Copyright is free, instantaneous and automatic from the time you write something down, take a picture, paint, type into computer memory, video onto tape, etc.
You may OPTIONALLY register your copyrighted work in the US Copyright Office, regardless of what country you live in.
You may also file a registration for a trademark in the USPTO if you plan to use it in the USA, and you can use your existing foreign registrations (if any) as priority references.
Your own federal laws will have the details on where and how to file a registration for trademark in your country, assuming you don't live in some backwater that cannot spell IP.
To contradict the extraneous answer about "patents" (which have nothing to do with either copyright or trademark), it is totally false that any court in any country is going to recognize any patent from another jurisdiction. If you want to sue for patent infringement in any country, you need a patent issued in that country (with the exception that European Union members recognize each others' patents). The PCT only offers an inventor the ability to file a single application, have a search done, and an optional international examination, AFTER which there is still a "national phase" required for each and every country/jurisdiction where an enforceable patent is desired. This includes filing any necessary fees, search and examination reports, translations and supplements, and appointment of local agent, by a specific date (typically within 30 months of initial filing), after which the national patent office in any country may still reject the application and refuse to issue any national patent.