A marriage between Thelen Reid & Priest and Brown Raysman Millstein Felder & Steiner is becoming a distinct possibility, and an agreement could be announced later this summer, according to sources at both firms.

The two firms have been talking for at least three months and one Brown Raysman source characterized the discussions as “advanced.” The firms have shared financial information, although they haven’t yet approached rank-and-file partners or signed a letter of intent, the sources said.