The Dolphins also placed backup tight end Charles Clay on injured reserve Tuesday with a right knee injury. Patterson reinforces the secondary with the questionable status of cornerback Nolan Carroll, who hurt his left knee in Sunday's win over Jacksonville.
Patterson, who signed a $16 million, three-year contract last offseason, has appeared in seven games this season with four starts. He missed seven games after tearing a ligament in his left ankle, but has played the past two weeks.
Patterson had a career season with Philadelphia in 2010, when he made four interceptions. The Dolphins are his fifth team.
Copyright 2012 by The Associated Press