The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon
Work 020 7405 4044
Fax 020 7405 3580

Mike Jennings

Work 020 7440 6850
A.A. Thornton & Co.

Work Department

Electrical, electronics, telecoms and IT.


Partner Mike Jennings  specialises in patent protection, oppositions and advice for a range of technologies including areas of physics, electrical engineering and computer-related inventions. Mike has more than 20 years' experience handling patent drafting and prosecution of European, PCT and UK patent applications in areas such as telecommunications, electromagnetic and optical sensing technologies for locating hydrocarbons and for detecting gases, and computing technologies including software, semiconductor devices and processing, computer circuitry, processors and storage systems. Mike also handles a substantial opposition case load, and advises on infringement and validity of patents.

Mike's clients include multinational corporations and leading companies in the UK and many other countries, including clients in the oil and gas industry, the telecommunications sector, engineering, gas detection, consumer electronics and computing.

Mike is a member of the marketing management group, and plays an active role in the implementation of the marketing, advertising and new business strategies.


Joined the patent profession in 1990 and spent two years handling electrical patent work with Spruson & Ferguson in Sydney, Australia and gained several years' experience as an in-house senior patent attorney for IBM in the UK, handling invention reviews, patent drafting and prosecution and licensing; joined A.A. Thornton & Co 2007; became partner 2008.


Chartered Institute of Patent Attorneys (CIPA); European Patent Institute (EPI); Computer Technology Committee of CIPA; Licensing Executives Society (LES).


University of Bristol (BSc Hons Physics).


Mike grew up on the south coast of England and loves messing about in boats. He remains blindly optimistic that he will one day convert this enthusiasm to some modest racing success (at least he might get a sun tan while trying!).

London: TMT (technology, media and telecoms)

PATMA: Patent attorneys

Within: PATMA: Patent attorneys

A.A. Thornton & Co.’s level of service is β€˜outstanding’ – β€˜timeliness and appropriateness of advice are a constant’ according to clients, who rate the level of scientific knowledge displayed by the partners and associate lawyers as β€˜excellent’. The team is highly experienced in European and UK patent prosecution and EPO oppositions and appeals, and following the arrival of IP litigator Geoff Hussey, who joined from Bird & Bird LLP, the team is increasingly handling high-stakes contentious patent cases. Highlights included successfully representing RSR in patent infringement proceedings in Germany relating to a medical diagnostic kit; acting for a well-known British tea company on assessing and mitigating the legal risks associated with a new product launch, which involved infringement analysis of a number of third party patents; and assisting a US multinational corporation with the defence of EPO opposition proceedings relating to licensed technology used in the oil & gas industry. According to clients, Craig Turner’s main strength is β€˜his ability to quickly understand complex applications’ in the fields of chemistry, chemical engineering, pharmaceuticals and biotechnology. Also recommended are Mike Jennings, for his β€˜technical competence and ability to understand and explain complex arguments’; Marianne Privett and Lawrence King, who are β€˜very knowledgeable both in Chemistry and in IP law’; mechanical engineering specialist Adrian Bennett, Christian Reinders and Christopher Burnett are further names to note.

[back to top]

Back to index

Legal Developments in London

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
  • The legal difference between a consultant and an employee according to Nicaraguan Law

    Knowing the legal difference between a consultant and an employee is important for a company that needs to hire someone in Nicaragua or for a person interested in rendering services for a company or another person, due to the fact that the nature of the contractual relationship will determine many factors that both parties must be aware of before executing the contracting modality that will govern the relationship between them - the nature of the contractual relationship impacts on the employment benefits, tax implications and liabilities that the parties must comply with according to the law. Β labor_law_in_nicaragua
  • Single director - shareholder Companies according to the Nicaraguan legal system

    What is a Single Shareholder and Director legal entity?
  • Business in Nicaragua- The Most Important Changes in the Recent Tax Reform

    In recent years, the country ́s the government has been committed to improving Taxation in Nicaragua and attempting to follow the legislative model used by some of the other countries in the region. Starting January 1st, 2013, a new tax law (Law No. 822, Tax Concertation Law) came into force in and completely changed the taxation system in Nicaragua. Two years later a new law was issued by the National Assembly containing more than 80 amendments, additions and repeals (Law No 891) which came into force December 18th, 2014.