Appleyard Lees
David Walsh

David is a Partner in our Chemistry & Pharmaceuticals team and Life Sciences team and is based in our Leeds office. He has worked for a broad range of clients from individuals through to SME’s and multinationals and is currently responsible for the patent portfolios of several national and multinational companies. David’s clients cover a broad range of technical areas including pharmaceuticals, coatings, biotechnology and catalysis. David has extensive experience in handling patent oppositions and taking oral proceedings at the European Patent Office and he frequently advises clients on patent infringement clearance for new products. David frequently speaks at events in the UK and internationally.

David obtained a BSc Hons degree from the University of Surrey and Michigan State University and a PhD in Chemistry from UCL before entering the patent profession in 1992. He trained as a patent attorney with boutique private practice firms and with a multinational law firm before moving to Appleyard Lees in 1996.

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