LES was established in 1965 for promoting international cooperation and communication in the transfer, employment, development, marketing and management of intellectual property. It is currently one of the leading international non-governmental and professional organizations in that field of commercialization, licensing and transferring of intellectual property. There are more than twelve thousand members over eighty-five countries, separately subordinated to thirty-two branches, and Chinese Taipei is the thirty-first branch. The members personally joined in as different identity such as practiced managers, lawyers, licensing counselors, engineers, researchers of academic institutes, government officials or college professors. Some of them even have received Nobel Prize.

  According to its rules and regulations, the headquarters of LES was titled as LES International (LESI) and its branches were titled as “LES country or region name” or “member of society”. The biggest and soundest branches are LES USA and Canada, LES Japan, and LES Germany.

The accession process took two and half years. Initially the LES International proposed the establishment of a new chapter by consulting with all parties concerned.  With the basic framework worked out, and the proposed constitution ratified, the Steering Committee of LES Chinese Taipei began its works in earnest and successfully met all the criteria laid down by the LES International.  Finally, at its International Delegates Meeting on 12 June 2005 in Munich, Germany, the LES International by an unanimous vote formally accepted Chinese Taipei as its 31st Society.  As of 20 March 2006, LES Chinese Taipei received formal approval and recognition as a non-profit civic organization by the local governing authority.