David R. Marsh
is a partner in the firm. He focuses extensively on intellectual property counselling, patent prosecution, interferences, inter partes and ex parte matters, Hatch-Waxman issues and patent procurement, including in the biotechnology, business methods, chemical, clothing, computer media, consumer products, pharmaceutical, and medical device areas. His experience includes lead counsel for numerous post-allowance proceedings at the US Patent and Trademark Office such as re-examination, reissues, inter partes reviews and interferences, appeal counsel at the US Patent and Trademark Office Board of Patent Appeals and Interferences, lead co-ordinating counsel for multiple European Opposition proceedings and other worldwide dispute resolution proceedings, worldwide patent prosecution experience, non-infringement and invalidity analysis and multiple due diligences.
Chambers and Partners make no representation or endorsement of the quality and services supplied
by companies or firms that may be found on this website. In no event will Chambers and Partners
be liable for any damages including, without limitation, indirect or consequential damages,
or any damages whatsoever arising from use or loss of use, data, or profits, whether in action
of contract, negligence or other tort action, arising out of or in connection with the use
of the website.