Mewburn Ellis has worked closely with Haydale Graphene Industries plc, and its wholly owned subsidiary Haydale Limited, (together “Haydale”) on patent and trade mark protection, commercial intellectual property (IP) advice, as well as playing a major role in the IP due diligence for its £6.6 million Initial Public Offering (IPO) on AIM.



 Haydale is a nanomaterials development and production company. The company enables the application of graphenes and other nanomaterials across a variety of fields including inks, energy storage and coatings.

IP protection for Haydale

Patrick Stoner, one of the partners at Mewburn Ellis in the nanotechnology sector team, has helped Haydale build up a patent portfolio to protect its low temperature plasma processes to functionalise graphene and other nanomaterials.

The trade mark team at Mewburn Ellis has helped Haydale protect its mark HDPlas® and Haydale®.

Support for IPO

Sean Jauss, head of our legal services team, and Patrick supported Haydale Graphene Industries plc on all IP aspects of its flotation, in particular conducting IP due diligence and providing a statement on the company’s IP for the IPO Admission Document.

Commercial IP advice

When Haydale subsequently acquired EPL Composite Solutions (EPL), Sean advised on all IP aspects of the purchase. This included IP due diligence, advising on IP aspects of the Sale and Purchase Agreement and the disclosure letter, and preparing and negotiating various ancillary agreements. He was assisted by Paul Dunne, a patent attorney and member of Patrick’s team, who conducted due diligence on EPL’s patent estate.

Sean and his assistant, Emma Gallacher, continue to provide Haydale with commercial IP advice on a wide range of matters and business critical external contracts. Recent examples, include drafting and negotiating the Exclusive Plasma Reactor Development & Supply Agreement with Tantec A/S under which Haydale acquires its state of the art plasma reactors and its Research & Development Agreement with Swansea University’s Welsh Centre for Printing and Coatings.


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