From the website:
Each year the Academy presents the Origins Awards at the Origins Game Fair in June. The purpose of the Origins Awards is to reward excellence in game design.
The Top 5 products in each category, as determined by the Academy Jury, are announced after the GAMA Trade Show in March. The Top 5 nominees are voted on by all members of the Academy. The Academy vote determines the winner of the Origins Award. The Top 5 products are also voted on by attendees of the Origins Game Fair for a chance to win the Fan Favorite award in each category. The winners are announced at the Origins Awards ceremony during Origins in June.
Any publisher or designer may submit an eligible product for consideration during the course of the year before the published deadline.