mikemill
Contributor
No you don't. What you said is 100% wrong. To start with you can't not copyright it. Once the work is created it is copyrighted. What you can do afterwards is license it or release it to the public domain (or in some situations release it with a license that gives the same rights as the public domain in countries that don't have a public domain). Second there is no yearly renewal:didn't copywrite it,(and yes you have to claim it yearly)
http://www.copyright.gov/circs/circ1.pdf:A work that was created (fixed in tangible form for the first time) on or after January 1, 1978, is automatically protected from the moment of its creation and is ordinarily given a term enduring for the authors life plus an additional 70
years after the authors death. In the case of a joint work prepared by two or more authors who did not work for hire, the term lasts for 70 years after the last surviving authors death. For works made for hire, and for anonymous and
pseudonymous works (unless the authors identity is revealed in Copyright Office records), the duration of copyright will be 95 years from publication or 120 years from creation, whichever is shorter
Oh and before anyone even thinks to say it: Registration isn't required for protection (but is needed for certain court proceedings).