Originally, Mueller accused the singer of "intentional interference with contractual obligations" and "interference with prospective business relations" that led to lost wages, according to court documents obtained by ABC News.
However, Judge William Martinez will allow Mueller's claim of tortious interference with prospective business relations against the singer's mother, Andrea Swift, and her radio manager, Frank Bell, to proceed.
Taylor Swift's countersuit against Mueller, which includes claims of assault and battery, also still stands.
Both parties' attorneys will have 60 minutes for closing arguments next week, and then the jury will be left to deliberate.
Mueller sued Taylor Swift, 27, in 2015, claiming that she falsely accused him of grabbing her backside during at a 2013 meet-and-greet, which caused him to lose his job. The singer then filed a countersuit, claiming that Mueller, "took his hand and put it up my dress," according to the documents obtained by ABC News.
"He stayed latched on to my bare ass cheek as I lurched away from him," Taylor Swift testified this week. "I got as far away from him as I could."
Mueller denied the allegation and testified that he was "100 percent clear" with his managers at his former station 98.5 KYGO-FM that he did not grope Swift. On Wednesday, Andrea Swift testified that she wanted KYGO to "make their own conclusion" about what happened, but felt it was necessary to report the alleged incident because "we did not want him to get away with it." Bell, a longtime Swift family friend and the singer's radio manager, testified that Andrea Swift wanted him to "make sure that Mr. Mueller was fired," but said he merely asked them to look into the allegation.
"All I asked him to do is investigate and take action," he said.
Bob Call, the marketing manager for KYGO who fired Mueller, testified that he never promised the Swift team that he would fire Mueller, and said he told them his team would "give all the facts fair consideration."
Mueller said in depositions that his damages amount to about $3 million; Taylor Swift is seeking compensatory, actual and punitive damages in an amount to be proven at trial. She also wants a verdict that holds Mueller responsible for the alleged assault.
The singer has said that she will donate any money she receives to charities.