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Leanne Mostert
Leanne Mostert
Position: Partner
Practice: Intellectual Property, IT Electronic Business Media and Telecoms
Office: Cape Town
Telephone: +27 21 431 7344

Leanne Mostert is a partner in the Technology, Media, Telecommunications & Intellectual Property Practice at Webber Wentzel.

She is an expert in all aspects of commercial intellectual property (IP) law.  She has significant experience in dealing with complex, high-value contracts relating to the monetisation of IP rights and IP issues flowing from international acquisitions and disposals, public offerings and corporate reorganisations, international structures and exchange control issues.

Leanne manages a number of IP portfolios (including trademarks, copyright, registered designs, patents and domain names all over the word) for local, multi-national and international blue chip clients who operate across all major sectors.
She is an accomplished speaker on IP and lectured MBA students at the University of Cape Town’s Graduate School of Business on protecting business ideas for many years.  She is also a member of the Licensing Executives Society and the International Association of Trademark Attorneys and a fellow of the South African Institute of Intellectual Property Law.

Her expertise has been recognised by international research organisations including Chambers Global, Legal 500, Legal Experts EMEA, Client Choice and IAM Patent 1000.

Leanne has B.Sc and LLB degrees from the University of KwaZulu-Natal.  She has also completed an IP and Business Strategy Course at Harvard Business School.

Areas of expertise


  • Protection, management and monetisation of intellectual property rights (IP) and technology
  • Transactional M&A deals and due diligence investigations
  • Exchange control and IP structuring
  • Trade mark and domain name registrations
  • IP dispute resolution



  • Named by:
    • Chambers Global 2014 (Intellectual Property).
    • Legal 500 2011 - 2017 as a legal expert (Intellectual Property).
    • Client Choice International 2014 as the South African winner (Trademarks).
    • Intellectual Asset Management (IAM) Patent 1000 - The World's Leading Patent Practitioners 2012 - 2014 as a technology transaction expert.
    • IAM Licensing 250 - The World's Leading Patent and Technology Licensing Practitioners 2010 - 2011 as a leading technology licensing practitioner.
    • Legal Experts EMEA 2012 - 2014 as an expert (Intellectual Property).
    • Managing Intellectual Property 2011 - 2013 (Intellectual Property).
  • Acted as a validator of the top 22 submissions for the Innovations Prize for Africa (IPA) 2013 from an intellectual property perspective.  The IPA is a joint initiative of the African Innovation Foundation and the United Nations Economic Commission for Africa.  Its aim is to mobilize African innovators and entrepreneurs by providing significant funding to winners who deliver market-oriented solutions for African-led development.
  • Member of the:
    • Licensing Executives Society (2008 to present).
    • International Trademark Association (2008 to present).
  • Fellow of the South African Institute of Intellectual Property Law (1999 to present).