Dear Permissions, Critical Concepts in Intellectual Property Law Series Editor: Robert P. Merges We are currently clearing permissions for the upcoming two-volume set, *Intellectual Property and Economic Development*, edited by *Carlos M. Correa*, Director of the Center for Interdisciplinary Studies on Industrial Property and Economics at the Law Faculty, University of Buenos Aires, Argentina, and Special Advisor on Intellectual Property and Trade of the South Centre, Geneva, Switzerland, which is part of the above series. In this title the editor proposes to include the following material, for which we would like to receive non-exclusive English language world rights for facsimile reproduction: Rufus Pollock (2006), ‘Cumulative Innovation, Sampling and the Hold-Up Problem’, *Danish Research Unit for Industrial Dynamics (DRUID) Working Paper No. 06-29*, 1–25 The author has kindly granted us his permission to reprint the article and believes he holds copyright in the piece. I would be most grateful if you could confirm this. Our book is designed to bring together the most important and influential papers in the subject area to supplement the research resources in libraries across the world. It will be published in hardback only on a very low print run of just 200 copies. We will, of course, be pleased to make a full acknowledgement in the usual manner. I look forward to hearing from you soon. With thanks and best wishes, Jenni -- *Jenni Gardner* Project Editor, Research Collections *Edward Elgar Publishing Ltd* Independent Publisher of the Year 2017- Independent Publishers Guild Academic & Professional Publisher of the Year 2017 & 2014 - Independent Publishers Guild Digital Publisher of the Year 2015 - Independent Publishers Guild Independent, Academic, Educational and Professional Publisher of the Year 2014 & 2013 - The Bookseller The Lypiatts, 15 Lansdown Road, Cheltenham, GL50 2JA, UK | Tel: +44 (0) 1242 226934 | Fax: +44 (0) 1242 262111 www.e-elgar.com | https://twitter.com/elgarpublishing | A family business in international publishing Edward Elgar Publishing Limited is registered in the UK at the above address. Registered number: 2041703