Kasowitz, Benson, Torres & Friedman has struck back hard at former partner Jeremy S. Pitcock, who last month filed a defamation suit against the firm over its issuing of a press release vaguely stating that he had been fired for “extremely inappropriate personal conduct.” Filing its own lawsuit against Pitcock Monday in Manhattan Supreme Court, Kasowitz Benson removed all vagueness, claiming the former head of the firm’s intellectual property practice had sexually harassed at least a dozen female associates and staff members.

The firm, represented by Sullivan & Cromwell’s Gandolfo V. DiBlasi, said in its 20-page complaint that Pitcock had engaged in a “pattern of suggestive comments, sexual innuendo, sexual propositions, sexually-oriented teasing, gender-specific jokes and obscene gestures.” In one instance, the firm claims, he “assigned” a junior associate to have drinks with him. He also allegedly made sexual advances to seven women at the firm’s 2007 holiday party, slapping one on the buttocks.