Katie Coltart is a partner in Kirkland’s London Intellectual Property team. Katie focuses her practice on patent litigation and licensing, particularly in the life sciences and tech sectors. Katie is experienced in dealing with major cross-border matters and multi-jurisdictional cases requiring significant coordination across multiple forums at both first instance and on appeal.

Katie has worked on the litigation and licensing of patents across a broad spectrum of technological subject matters including those relating to antibody and other protein biologics, biological product development and screening platforms, checkpoint inhibitor immunotherapies, diagnostics and next generation sequencing technologies, medical devices, wireless and mobile telecommunications, and consumer product technologies. With a degree in Natural Sciences (Chemistry and Biology) Katie is well placed to advise her life sciences clients on their most technical subject matter.

In addition to her patent practice, Katie also has experience dealing with trade secrets, trade marks, and other IP licensing matters in the finance, media, and retail sectors.

Katie is recognised as an ‘Up and Coming’ Lawyer by Chambers UK (2022), and praised by clients for her “good technical background” and “sharp mind.” Katie has also been ranked for the past three years as a ‘Next Generation Partner’ for Intellectual Property by The Legal 500 UK, where she is described as “incredibly responsive and astute”. She is further ranked as an ‘IP Trailblazer’ in World Intellectual Property Review’s Influential Women in IP 2019; and a WIPR Leader by World Intellectual Property Review.


Thought Leadership


Patent Litigation 2021: Trends and Developments”, Chambers and Partners Practice Guides, 2021

Court on Camera”, World IP Review, April 2020

Setting global licence rates for standard essential patents: will the UK take centre stage?”, Financier Worldwide Magazine, January 2020

UK Supreme Court Case Tracker: Unwired Planet v Huawei; Conversant v Huawei And ZTE, November 2019

How to empower young IP lawyers to be leaders”, Managing Intellectual Property, July 2019

“Patent Litigation 2019: Trends and Developments”, Chambers and Partners Practice Guides, 2019

“What is indication extrapolation and is it affecting biosimilars in Europe?”, IPPro - Life Sciences, 2014

Press Coverage

Quoted “Virtual trials creating hurdles for expert witness testimony”, Managing Intellectual Property, January 2021

Quoted “5G’s Arrival Tees Up Patent Fights in Market Set to Grow 12,000%”, Bloomberg Law, October 2020

Quoted “Lawyer reactions: Unwired Planet ‘brings certainty’,” Intellectual Property Magazine, 27 August 2020

Quoted “Video hearings drive innovation in Europe’s patent courts”, JUVE Patent, April 2020

Quoted “The rise of the virtual court?”, World IP Review, April 2020

Quoted “COVID-19: Lawyers’ jet-set lifestyles may decline post-crisis”, Managing Intellectual Property, April 2020

Quoted “Paris now the ‘logical’ venue for FRAND disputes, claim TCL lawyers”, World IP Review, February 2020

Quoted “TCL Gets French Court To Oversee Philips FRAND Dispute”, Law360, February 2020

Mentioned “Paris takes first step towards becoming FRAND hotspot”, JUVE Patent, February 2020

Mentioned “UK Supreme Court Weighs Patent Disclosure In Mice Row”, Law360, February 2020

Quoted “FRAND At UK's Top Court: What You Need To Know”, Law360, October 2019

Quoted “In-House Counsel Should Pay Attention to Court Rulings in FRAND Litigation”, Law.com, August 2019

Mentioned “Developing the future leaders in IP”, Managing Intellectual Property, August 2019

Mentioned “Clients won’t litigate in every jurisdiction”, JUVE Patent, December 2018


WIPRInfluential Women in IP Interview: Katie Coltart, Partner at Kirkland & Ellis

Memberships & Affiliations

The Law Society of England and Wales

International Association for the Protection of Intellectual Property (AIPPI)

Pharmaceutical Trade Marks Group (PTMG)

ChIPs Network



Admissions & Qualifications

  • 2011, Admitted to practice as a Solicitor of England and Wales


  • University of OxfordPostgraduate Diploma in Intellectual Property Law and Practice2012
  • College of Law, LondonBachelor of Laws; Legal Practice CourseFirst Class Honours, with Distinction in LPC2008
  • College of Law, LondonPost-Graduate Diploma in LawDistinction2007
  • Durham UniversityB.Sc., Biology and ChemistryFirst Class Honours2006