A retired university professor who has pursued dozens of electronics companies for patent infringement on Monday filed a notice to sue her former attorneys for $10 million, accusing them of misusing escrow funds and charging her excessive fees.

Gertrude Neumark Rothschild filed a summons in Manhattan Supreme Court against Troutman Sanders; an intellectual property boutique chaired by Albert L. Jacobs Jr. before he became a partner at Troutman; and Mr. Jacobs.