David Posner left Otterbourg last June to become a partner at Kilpatrick Townsend & Stockton, leaving hundreds of thousands of dollars in capital in his former firm. The capital was partly financed through a loan.

Posner asked Otterbourg, a midsize firm, to return a portion of his capital before a January 2016 deadline to repay his loan. But in court papers seeking return of the funds, he claims Otterbourg has refused to return $382,880 in capital until 13 years from now, when the firm’s lease expires.