Dr Avantika Chowdhury


+44 (0) 20 7776 6619

Location: London

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Avantika specialises in competition and litigation. She has advised clients on a wide range of competition matters including merger assessments, horizontal agreements, vertical restraints and abuse of dominance cases in the UK and in Europe. 

Her experience in litigation covers damages litigations arising from cartels, abuse of dominance and patent infringements, as well as tax litigations and contractual disputes heard in courts in Europe, South Africa and the USA. She has worked on these issues in a range of sectors including communications, media, healthcare, pharmaceuticals, retail and transport. 

Avantika runs Oxera’s training courses on competition economics, and is involved in the training for national judges in EU Competition Law.

Selected project experience

  • Advising a third party in the context of the acquisition of O2 by H3G being investigated by the European Commission (2015–)

  • Risk assessment for an electronic good manufacturer in the context of a new distribution system in Europe (2015–)

  • Advising Statoil Fuel & Retail in its acquisition of Shell’s fuel retail business, notified to the European Commission (2015–)

  • Advising a supplier of pharmaceutical products in relation to an internal risk assessment regarding its pricing structure (2015)

  • Advice to a patent-holder in the telecommunications sector in relation to licensing of patent and potential dispute resolution strategies (2015)

  • Advised Skyscanner during its successful appeal against the OFT’s decision in the online hotel bookings case (2014–15)

  • Advised an automobile manufacturer in its dispute against an upstream supplier in relation to the foreclosure effects of certain exclusivity provisions (2015)

  • Advising a patent-holder in its dispute with potential licensees regarding FRAND royalty rates (2014–)

  • Advising a technology company in a dispute over royalty rates of its patents (2014)

  • Advising a purchaser of cathode ray tubes (CRTs) in relation to its claim for damages against the CRT cartel (2014–)

  • Advising AstraZeneca in defending against a damages claim by a generic entrant arising from an IP litigation (2013–15)

  • Advising multiple pharmaceutical companies in relation to the European Commission’s investigations into patent settlement agreements with Lundbeck and Servier (2012–15)

  • Advised Pinewood Healthcare in relation to its damages claim against Reckitt Benckiser (2011–14)

  • Advising a hospital group in South Africa in relation to the market inquiry into private healthcare (2013–)

  • Advised a large retailer on the competition risks associated with potential bidders during the sale of one its business units (2014)

  • Advising Nationwide in its damages claim against South African Airways following a finding of an abuse of dominance (2012–16)

  • Advising Rehab Lotteries in relation to its case against the National Lottery in Ireland (2012–)

  • Advised a client in defending a claim lodged at the UK Technology and Construction Court (2012)

  • Advice to Avon Cosmetics in relation to its claim against HMRC, filed at the Tax Tribunal (2012–)

  • Advised a regional water supplier on various strategic issues in the context of the transition to a more competitive water industry (2012–13­)

  • Advised the merging parties during the acquisition of Rontec petrol stations by J Sainsbury plc; the merger was cleared without any conditions by the Office of Fair Trading (2012)

  • Advice to a sports business in relation to a contractual dispute, including a competitive assessment of its contract with a key supplier (2011–12)

  • Advice to RWE Dea in defending a claim for damages relating to its involvement in the paraffin waxes cartel (2010–13)

  • Assisted in preparing multiple expert reports for Nokia in its damages claim against the LCD cartel, lodged in US courts (2009–12)

Selected publications

  • Chowdhury, A. and Gaigl, A. (forthcoming), ‘Economics of competition law and IP law’, introductory chapter, in Pitruzzella, G. and Musocolo, G., Competition and Intellectual Property Law in the Pharmaceutical Sector: An International Perspective, Kluwer Law International.

  • Chowdhury, A. and Gaigl, A. (2014), ‘An effects-based approach to reverse payment settlements’, Competition Law Journal13:3, pp. 307–16.

  • Chowdhury, A. and Noble, R. (2013), ‘Estimating damages from the global LCD cartel: The role of economics’, Competition Law Journal12:4, pp. 468–76.

  • Ernstsone, E. and Chowdhury, A. (2011), ‘Best of both worlds? Innovative approaches to modelling merger price rises’, Competition Law Journal10:1, pp. 80–90.


  • PhD Economics, Pennsylvania State University

  • MSc Quantitative Economics, Indian Statistical Institute

  • BSc Hons Economics, Calcutta University

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