Our clients are entrepreneurs, start-up companies, SMEs and larger companies. Many international companies trust us for their European operations, including those in the USA, Canada, China, Hong Kong, and Malaysia.

Nick, London

"Mas Legal advised me on my international trademark extensions. They successfully dealt with USPTO objections, and all my trademarks were successfully registered. I would recommend them to savvy entrepreneurs who would appreciate business minded lawyers".

Christopher, London

"Severine Mas is an excellent lawyer, with first-rate communication skills and a real dedication to providing superior quality service to her clients. I would recommend her unfailingly.”

Michel, Montreal

“Severine Mas combines an excellent knowledge of Information Technology and Intellectual Property law with a business mind, which keeps the information brief and to the point.”

Brigitte, France

"Top qualities: Personalized service, Expert, Good Value"

David, Paris

“I had the chance to meet Severine Mas at a conference she organised a couple of years ago. She is an expert in Intellectual Property and new technologies law. She is a trustworthy person with a high quality of expertise. I would recommend her to any company looking for a lawyer in her field of activity.”

Francesco, Italy

“I recommended Severine Mas as an Intellectual Property lawyer. She is highly specialised and experienced in the area of information technology law, software, trademarks, and patents. I am impressed with her degree of expertise. She is a highly professional, very efficient, multilingual attorney.”