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Registered Patent Attorney  -- United States Patent and Trademark Office

Robert J. Yarbrough is a patent lawyer providing confidential and cost-effective patent services nationwide.. ---. I have practiced law for thirty years.   I am a patent attorney licensed to practice before the United States Patent and Trademark Office and hold a degree in mechanical engineering.  I am  a partner in Lipton, Weinberger &  Husick, a specialty intellectual property firm based in Southeastern Pennsylvania.  I also am an environmental attorney licensed in Pennsylvania and Kentucky.   In environmental matters, I am counsel to Drinker, Biddle & Reath  LLP, a firm of over six hundred lawyers with offices in Philadelphia, Washington, D.C., Princeton, Los Angeles and San Francisco.  I am rated AV (highest rating) by the Martindale-Hubbel attorney rating organization.. I opened my patent law office in 1998 and have practiced patent law from that time to the present.  I worked in the Environmental Practice Group of   Drinker, Biddle & Reath from 1996  until 1998 and in the   Environmental Department of Cohen, Shapiro, Polisher, Shiekman &   Cohen, a Philadelphia regional firm, from 1989 through 1995.  I  enforced environmental laws for the Commonwealth of Kentucky from 1977 through 1988.. I am Chairman of the Pennsylvania Intellectual Property Forum (1998 - 2008).  I am past Chairman of the  Delaware County Bar Association Intellectual Property Committee  (2002) and past Legislation Co-Chair of the Philadelphia Bar  Association Environmental Law Committee (2000-2001).   I am a frequent author and presenter on intellectual property topics.. Follow this link to my recent publications.  To send an e-mail to me, follow this link: e-mail. The Pennsylvania Intellectual Property Forum, of which I am Chairman, advocates for individual inventors and small businesses.  Follow this link to learn about our advocacy activities.