Jeremy Pitcock, the former head of intellectual property at Kasowitz, Benson, Torres & Friedman who was fired in December for inappropriate conduct, filed a defamation lawsuit against the firm Thursday seeking more than $90 million for what he calls the “malicious and unwarranted smear campaign” that followed his dismissal.

Pitcock, 35, joined Kasowitz in March 2006 after being wooed from Simpson Thacher & Bartlett, where he was a senior associate. Kasowitz named him head of IP not long after. Less than two years into that stint, Pitcock left the 200-plus-lawyer firm for New York IP boutique Morgan & Finnegan.