Complex sentence: Heinsheimer attempted to gain the copyright over the name "Gordon Bennett" and run the event without FAI sanction, however the FAI were granted exclusive rights to the name in 1983, and the organization officially reinstated the competition later that year.
Split into simpler sentences: Heinsheimer attempted to gain the copyright over the name "Gordon Bennett" and run the event without FAI sanction. However the FAI were granted exclusive rights to the name in 1983, and the organization officially reinstated the competition later that year.