A defense lawyer in a Bronx trial engaged in a “pervasive pattern” of win-at-all-costs misconduct that included screaming and sneering, denigrating expert witnesses and twice moving for a mistrial in front of the jury, making a new trial necessary, a Manhattan appeals court has ruled.

In a unanimous opinion Tuesday, an Appellate Division, First Department, panel upbraided New York attorney Keith McHugh for his actions during a monthlong personal injury trial in 2013.