A new lawsuit filed in federal court by Miami real estate company American Residential Equities LLC alleges a well-known accountant who has testified in numerous cases held himself out to be expert in the loan-servicing field but instead racked up the hours learning about the topic.

“Pretending to have the knowledge or trying to get up to speed after being retained is a disservice to the judicial system,” said Alan Kluger, a partner at Kluger, Kaplan, Silverman, Katzen & Levine in Miami. “The guy just wasn’t who he said he was.”