I'm a lawyer.
SURE! PUT A COPYRIGHT NOTICE! WHAT'RE YOU GONNA DO? SUE?
FIRST, you have to REGISTER IT with the U.S. COPYRIGHT office. Since January 1, 1978 in the U.S. ANYTHING ANYONE creates is AUTOMATICALLY copyrighted. BUT to SUE you have to register it.
Yes, there's a fee.
THEN you'll have to PAY A LAWYER.
HOURLY ...
Copyright infringement is a VERY NARROW legal field. Very few lawyers do it. They'd probably charge about FOUR HUNDRED DOLLARS AN HOUR.
It has to be filed in FEDERAL court. Start to finish the case would probably be about TWO TO FOUR HUNDRED "BILLABLE" HOURS. So $400/hr x 400 hrs = $80-160,000 legal fees.
You could get "STATUTORY" damages of $25k minimum--SHOW AN INFRINGEMENT, GET A JUDGMENT FOR $25K + attorney fees. To get more you have to show ACTUAL DAMAGES, such as lost profits, etc.
YAY!!! YOU NOW HAVE A **PIECE OF PAPER** SAYING YOU WON!
GOOD LUCK **COLLECTING** THAT!
BY THE WAY -- THE **LAWYERS** EXPECT TO BE PAID--WHETHER YOU RECEIVE ANY MONEY **OR NOT**.
Does the name BAD LUCK BRIAN mean anything to ya?