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Legal 500

Avi Toltzis
Assistant Solicitor



Avi has worked on a range of contentious and non-contentious intellectual property matters. He has particularly extensive experience working on patent matters for life sciences clients and regularly conducts legal, technical and commercial research in this field. Additionally, Avi has conducted a large scale disclosure exercise on behalf of a biotechnology client and routinely monitors proceedings before the UK courts and European Patent Office in relation to our clients’ product portfolios.

Avi also has experience in procuring, commercialising and enforcing soft IP rights, such as trade marks and designs.

Prior to joining Powell Gilbert, Avi worked as a lawyer and patent attorney in the US. Avi’s experience as a US patent attorney is particularly valuable in assisting with complex disputes involving parallel proceedings in overseas jurisdictions.

Contact details

T +44 (0)20 3040 8158
E avi.toltzis@powellgilbert.com


2013 Solicitor
2010 Patent Attorney (USPTO)
2009 Attorney (New York)



LLM, University College London
JD, The George Washington University Law School
BA, New York University

Cases include
  • Eli Lilly v Human Genome Sciences (neutrokine alpha)
  • Synageva BioPharma v Children’s Hospital Research Foundation (enzyme replacement therapy)
  • Eugen Seitz AG v KHS Corpoplast GmbH & Norgren AG (PET bottle manufacture)
  • Pharmaq v Intervet (SPC)