A lawyer may communicate the fact that the lawyer does or does not practice in particular fields of law.
Mich. R. Prof'l. Cond. 7.4
Comment:
This rule permits a lawyer to indicate areas of practice in communications about the lawyer's services, for example, in a telephone directory or other advertising. If a lawyer practices only in certain fields, or will not accept matters except in such fields, the lawyer is permitted to indicate that fact.