Patrick, a Texas state senator, finished well ahead of Dewhurst in the initial Republican primary election in March and is considered the favorite to win a May runoff.
The Dewhurst campaign's attack video focuses on Patrick changing his name and filing for bankruptcy in the 1980s. Patrick was born Dannie Goeb but began going by Dan Patrick while working as a sportscaster and legally changed his name in 2003.
In response, Patrick went on DewFeed and fired back with a post featuring animated Frozen GIFs.
"All we're doing is we're quoting things he's said, things he's done, from newspapers, from TV shows," Dewhurst told KERA about his aggressive ads.