[3] Don't Talk to Irene later won the award for Best Comedy Screenplay at the 2013 Austin Film Festival.

[4] Mills, who is gay,[2] wrote Guidance as a satirical spin on his own history as a child actor,[2] centering the screenplay on a character whose backstory is similar to his own but who has much more dysfunctional ways of dealing with his insecurities.

[13] In 2020 Mills directed the digital series Queens for CBC Gem, and was nominated for a Writers Guild of Canada Screenwriting Award for the episode "Minnie and Sharron".

[19] In 2023, Pat was nominated for a Director's Guild of Canada Award for Outstanding Direction in a Comedy Series for Run the Burbs.

[20] He collaborated with Noel S. Baker and Zoe Whittall on the screenplay for the 2024 film We Forgot to Break Up, which was directed by Karen Knox.