Claim: Star Trek invented Klingon language for the fictional species of the same name.
Evidence: The series has its own full-fledged constructed language , Klingon.
The Klingon language -LRB- tlhIngan Hol , -LSB- ˈt͡ɬɪ.ŋɑn χol -RSB- , in pIqaD -RRB- is the constructed language spoken by the fictional Klingons in the Star Trek universe.