Firkser signed a contract with the Patriots on Thursday, Mike Reiss of ESPN.com reports.
Firkser appeared in 11 games for the Falcons last season after spending the first four years of his career with the Titans. The 28-year-old finished his 2022 campaign with nine catches on 13 targets for 100 yards. With the Patriots, Firkser will seek to secure a depth tight end role behind the team's top two options at the position, Hunter Henry and Mike Gesicki.