Damages not recoverable for want of notice or marking.
Section 44
SEC. 44. Damages not recoverable for want of notice or marking.—Damages cannot be recovered for acts of infringement committed before the infringer had actual notice of the patent, unless the patetee or those exploiting the invention on his behalf or under his authorization have given notice to the public that the machine, device, articles or process is patented either by placing thereon the words "Philippine Patent" with the number of the patent, or when the nature of the article this cannot be reasonably be done, by placing such notice on the package or container in which the device or article is supplied to the public, or in descriptive or advertising matter used in connection with the patented machine, device, article or process.