Here is the list of the winners from the major categories of the Oscars:
Best Picture
Birdman - Alejandro Gonzlez Irritu, John Lesher, James W. Skotchdopole
Best Director
Alejandro Gonzlez Irritu - Birdman
Best Actor
Eddie Redmayne - The Theory of Everything
Best Actress
Julianne Moore - Still Alice
Best Supporting Actor
J.K. Simmons - Whiplash
Best Supporting Actress
Patricia Arquette - Boyhood
Best Original Screenplay
Birdman - Alejandro Gonzl
Best Writing Adapted Screenplay
The Imitation Game - Graham