- Copyright matters primarily in Latin America
- Castillo is also Of Counsel at Mitchell Silberberg & Knupp LLP where she represents clients in the book publishing, film, video game, and music industries in matters concerning copyright policy.
- Represented creative industries on various Copyright Office roundtables on the right of making available and Sections 512 and 1201 of the Digital Millennium Copyright Act (DMCA).
- Drafted comments on numerous matters on behalf of the book publishing industry, including the Library of Congress’ mandatory deposit program, Copyright Office fees and modernization, Sections 512 and 1201 of the DMCA, and the Children’s Online Privacy Protection Rule.
- Prepared witnesses for Congressional hearings during the Copyright Review (2013-2015).
- Represented book publishers in the drafting, review and comment process for the American Law Institute’s Restatement of Copyright Law.
- Participated, on behalf of book publishers, in negotiations for U.S. implementation of the Marrakesh Treaty to Facilitate Access to Published Works for Persons Who are Blind, Visually Impaired, or Otherwise Print Disables.
- American University Washington College of Law, J.D., 2013
- Stanford University, M.A., 2007
- Trent University, B.A. with honors, 2005
- Li Po Chun United World College, 2002