Simple past tense and past participle of copycat.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "copycatted" in a sentence
"Since it is now known that Harvard professors have plagiarized, copycatted, and pretty certainly have had stuff ghostwritten for them, the bona fides and reputations of nearly everyone at Harvard is called into question, especially people in the law school."
"There's a reason the practice was copycatted: Borg won five straight at the All-England Club."
"But its bid will be severely handicapped if the Arizona statute remains undisturbed or is copycatted by sister state jurisdictions."