False Marking - Patented Articles, and Associated Advertising, Brochures and Websites

Do you know why you mark your patented articles and associated advertising, brochures and web sites with "PATENT 1234567", "PATENT", or "PAT PEND"? There may be a number of reasons, but the primary reason will be to increase the likelihood that infringers will be liable from the earliest infringement and not just for their infringing activities after the date upon which they are advised in writing of the existence of the relevant patent. However, do any of your articles etc bear those markings even though the relevant patent or patent application is no longer in force or pending? Both in Australia and in other countries such as the United States, this is an offence under the relevant patent laws.