Dear Members of the IGO CRP WG: I hereby submit my resignation as Co-Chair of the PDP Working Group on Curative Rights Protections for International Intergovernmental Organizations, effective immediately. When I agreed to serve as a Co-Chair of this WG I expected that it would complete its work within eighteen months. It has now been operating for almost four years, and substantial additional effort will be required to agree upon and file a Final Report. Given that in November 2017 I started a new job with extensive responsibilities, and continue to serve as Co-Chair of the PDP WG reviewing Rights Protection Mechanisms in all gTLDs, I can no longer devote the time and effort required to effectively and responsibly serve as a Co-Chair of this WG. I shall remain a member of this WG and participate in the wrapping up of its work. I could not have asked for a more knowledgeable, even-tempered, or collegial colleague with whom to serve as Co-Chair than Petter Rindforth, and I look forward to supporting his efforts, as well as those of Council Liaison Susan Kawaguchi, to bring this WG to a conclusion. I also thank ICANN policy staff for their invaluable support and advice throughout the course of our work. Sincerely, Philip S. Corwin Philip S. Corwin Policy Counsel VeriSign, Inc. 12061 Bluemont Way Reston, VA 20190 703-948-4648/Direct 571-342-7489/Cell "Luck is the residue of design" -- Branch Rickey