Joseph Kolasch has been working in the patent field since 1960, beginning as an Examiner in the U.S. Patent and Trademark Office (USPTO). After leaving the USPTO, he worked for private patent law firms until he started his own firm with Mr. Raymond Stewart in 1971, which became Birch, Stewart, Kolasch and Birch in 1976. Since entering private practice, Mr. Kolasch has developed considerable experience in USPTO practice, including both prosecution and interference practice. He has also developed particular experience in licensing matters, negotiations, trademarks, patent validity and infringement opinions and related matters. Mr. Kolasch has lectured internationally on many occasions both in Europe and Asia.