Law Firm and their registered logo

Hello learned Seniors & frds, I am a partner of a registered law firm. Our firm is thinking to get a trademark but we are confused that with the name of a firm can we use logo or mono of 1. Lady Justice 2. Gavel(hammer) 3. Scales or anthing which represent law. is there any restriction by bar council or advocates act; well i found nothing therefore need ur help. Thanx. Regards Arpit Saxena (Adv.) +91907-9075-04