A federal judge in Manhattan has allowed sex discrimination claims to proceed against an intellectual property law firm that fired an associate two days after she complained in an e-mail to partners that the firm’s women lawyers were being “relegated to non-partnership track support roles.”

In a 53-page opinion issued last week, Southern District of New York Judge Kimba M. Wood said Catriona Collins had established a prima facie cases of discrimination and retaliation against her former firm, Cohen Pontani Lieberman & Pavane.