Partner
Chartered Patent Attorney
European Patent Attorney
BEng Mechatronics, University of Leeds
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Sullivan leads Keltie's Sustainability Practice, and deals with technologies in many sectors, across the full range of engineering disciplines, including mechanical, electronic, materials, control systems, and software-related inventions.
Sullivan read Mechatronics at the University of Leeds, where his studies included analogue and digital electronics, software engineering, microprocessor interfacing, dynamics and control theory, power electronics, robotics and machine intelligence. This broad range of technical understanding supports his main practice of drafting and prosecuting patent applications in engineering and computer-related technologies.
Before joining Keltie in 2002, Sullivan worked for two years as an Avionics Systems Engineer with a defence contractor where he was involved with system design, integration and testing of helicopters. He qualified as a Chartered and European Patent Attorney in 2008.
After eight years at Keltie, Sullivan relocated westwards as a qualified patent attorney and joined the Intellectual Property department of Dyson Technology where he was part of the team responsible for securing patent and design protection for Dyson's rapidly-expanding range of home appliance products. Sullivan returned to Keltie in May 2013, establishing Keltie’s base in the Cotswolds along with Richard Lawrence.
Sullivan now balances his practice between drafting, prosecution and infringement risk analysis work for large corporations which are key clients of Keltie, and growing Keltie’s presence in the West of England, working hand-in-hand with SMEs of various sizes to help them navigate the world of IP whilst establishing themselves commercially.
What people think about Sullivan
IAM Patent 1000 2025: Sullivan Fountain is “an intelligent and responsive attorney who communicates effortlessly with inventors. He writes and prosecutes well-designed patent applications and conducts precise freedom-to-operate searches. Sullivan is also appreciated for his deep technological knowledge which allows him to offer valuable insights on claim scope.”
17.06.2025
Patenting trends in circular plasticsAs environmental concerns and legislative pressures mount globally, innovation in plastics recycling and sustainable materials is no longer a niche pursuit; it is a commercial imperative. For UK businesses at the forefront of these developments, the European Patent Office (EPO) provides a valuable resource: Plastics in Transition, a technology platform that provides valuable patent information on the circular plastics economy.
16.08.2023
An interview with Sullivan Fountain, Partner at KeltieWe talk to Sullivan about what he thinks makes a successful IP law firm and learn about how Keltie is helping clients with their current IP challenges.
13.02.2025
Packaging innovations and IP08.03.2021
Materials and the power of a nameOtherLess related knowledge
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