Section 158June 6, 1997, Sec./Art. 158

Damages; Requirement of Notice. - In any suit for infringement, the owner of the registered mark shall not be entitled to recover profits or damages unless the acts have been committed with knowledge that such imitation is likely to cause confusion, or to cause mistake, or to deceive. Such knowledge is presumed if the registrant gives notice that his mark is registered by displaying with the mark the words '"Registered Mark" or the letter R within a circle or if the defendant had otherwise actual notice of the registration. (Sec. 21, R.A. No. 166a)