Leaders Directory

WIPR Leaders is a one-stop guide to the leading IP practitioners in the world. The handbook lists over 1,700 lawyers across two volumes: over 900 individuals in the both the patent and the trademarks section (some individuals are in both). Stemming from a four month nomination period in which we sought views from 12,000 IP professionals, our research team vetted every nominated lawyer for suitability by exploring their work. This meant looking at practice history, industry expertise and notable cases, as well as any additional activities, such as writing and teaching responsibilities, which have allowed the lawyers to shape and influence other and future IP practitioners.

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Charmayne Ong

Charmayne Ong

Charmayne Ong is a partner and head of intellectual property at Skrine. She is registered as a patent agent, design agent and…

  • Partner, head of IP
  • Skrine
  • Malaysia

Claudia Milbradt

Claudia Milbradt

Claudia Milbradt is a partner at Clifford Chance and has worked there since 1999. She specialises her practice in patent litigation,…

  • Partner
  • Clifford Chance
  • Germany

Colin Ingram

Colin Ingram

Colin Ingram is a partner at Smart & Biggar/Fetherstonhaugh and practises in patent prosecution and litigation. He has represented…

  • Partner
  • Smart & Biggar/Fetherstonhaugh
  • Canada

Gunars Gaikis

Gunars Gaikis

Gunars Gaikis has more than 25 years’ experience in life sciences intellectual property litigation. He has particularly focused…

  • Partner
  • Smart & Biggar/Fetherstonhaugh
  • Canada

Inga-Lill Andersson

Inga-Lill Andersson

Inga-Lill Andersson is a senior European patent attorney who specialises in chemistry and biotechnology, focusing on protein chemistry,…

  • Partner
  • Awapatent
  • Sweden

Maksym Bocharov

Maksym Bocharov

Maksym Bocharov is head of the patent department at Gorodissky & Partners (Ukraine) and has been with the firm since 2005. His…

  • Deputy Director
  • Gorodissky & Partners (Ukraine)
  • Ukraine

Peter Indahl

Peter Indahl

Peter Indahl has been practising law since 1986 and a European patent attorney at Indahls. He has experience in all areas of intellectual…

  • Patent attorney
  • Indahls
  • Denmark

Vivien Chan

Vivien Chan

Vivien Chan is a senior partner of Vivien Chan & Co, and has more than 30 years of experience in M&A, information technology,…

  • Senior partner
  • Vivien Chan & Co
  • Hong Kong

Vladislav Ugryumov

Vladislav Ugryumov

Vladislav Ugryumov specialises his practice in patent litigation and prosecution and has extensive experience representing clients…

  • Partner
  • Gowling WLG
  • Russia

Daniel DiNapoli

Daniel DiNapoli is a partner at Kaye Scholer and has experience in all areas of intellectual property law. He graduated from Columbia…

  • Attorney
  • Kaye Scholer
  • United States

Daniel Greif

Daniel Greif joined Spruson & Ferguson in 2016 and heads the firm’s new Thailand office. He has experience in trademarks, copyright,…

  • Partner
  • Spruson & Ferguson
  • Thailand

Daniel Hoppe

Daniel Hoppe

Daniel Hoppe is a partner at Preu Bohlig and has expertise in patents, utility models and trade secrets law. He often advises…

  • Partner
  • Preu Bohlig & Partner
  • Germany

Daniel Sánchez

Daniel Sánchez has worked at Olivares since 2000 and was promoted to partner in 2011. His practice includes trademarks, copyright,…

  • Partner
  • Olivares & Cia
  • Mexico

David Barron

David Barron is partner and head of technology patent litigation at Gowling WLG, based in the firm’s London office. His practice…

  • Partner
  • Gowling WLG
  • UK

David Bot

David Bot

David Bot joined NLO in 2001 and is a managing partner. He started his career as a trainee patent attorney in 1985 with Unilever,…

  • Partner
  • NLO
  • Netherlands

David Callahan

David Callahan

David Callahan is a partner at Latham & Watkins and is based in the Chicago office. He chairs the firm’s litigation department…

  • Partner
  • Latham & Watkins
  • United States

David do Nascimento

David do Nascimento graduated with a bachelor of law from the University of Sao Paulo in 1967, and has since created a career…

  • Founding Partner
  • David do Nascimento Advogados Associados
  • Brazil

David Hackett

David Hackett is a managing partner and head of intellectual property/information technology group at Eugene F Collins. He advises…

  • Managing partner
  • Eugene F Collins
  • Ireland

David Masson

David Masson

David Masson joined Salans (now Dentons) in 2006 and has extensive expertise in all areas of intellectual property. He has represented…

  • Partner
  • Dentons
  • France

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