Kessler Topaz Meltzer & Check didn’t flinch from bringing some of last year’s biggest securities fraud and shareholder derivative actions — and the firm counted more than $5.2 billion in big settlements and judgments.

The Radnor, Pa.-based firm won final approval in December for a $500 million settlement for investors in mortgage-backed securities issued by Countrywide Finan­cial Corp., the largest recovery of its type under the Securities Act. But first the case entailed a five-year legal odyssey in California’s state and federal courts.