The story
The firm was founded upon receipt of a commission for the Meier and Frank Building in Portland. The firm lasted until 1914. Patterson was the engineer and superintendent for the firm. With the addition of the engineer James George Beach, a son-in-law of prominent businessman Simon Benson, in 1911, the firm briefly became Doyle, Patterson & Beach, but Beach left in 1912 and the firm's name reverted to Doyle & Patterson. When less work was available in 1914, the partnership dissolved, and by 1915 Doyle was again working alone.
From Wikipedia’s article on Doyle & Patterson, shared under CC BY-SA 4.0.3