Stephen Ladas emigrated from Greece to the United States in the 1920s. Having built a successful intellectual property law practice he became a named partner in the US IP firm Ladas & Parry LLP. He participated in the 1958 revisions to the Paris Convention and was the author of numerous texts including his three volume treatise Patents, Trademarks, and Related Rights – National Royal and International Protection. At the time of his death in 1976, he was Treasurer-General and Member of Honour of the International Association for the Protection of Intellectual Property. The Ladas Memorial Award for legal writing was established by the International Trademark Association in his memory.