After a lawsuit of involving the billing practices of DLA Piper, the law firm on Tuesday issued a memo to its lawyers, calling language in e-mails written by its lawyers “unprofessional.”
The law firm is involved in a fee dispute with Adam H. Victor, an energy industry executive, who has accused the law firm of performing superfluous tasks and overstaffing assignments.
Mr. Victor’s suit cited several e-mail messages from lawyers at the firm. One e-mail involved a lawyer describing how a colleague...