(a) A person likely to be damaged by a deceptive trade practice of another may be granted an injunction against it under the principles of equity and on terms that the court considers reasonable. Proof of monetary damage, loss of profits, or intent to deceive, is not required. Relief granted for the copying of an article shall be limited to the prevention of confusion or misunderstanding as to source. (b) The court in exceptional cases may award reasonable attorneys' fees to the prevailing party