Third-party funding of international arbitration claims has grown dramatically in the past few years. But can the third-party funder be subject to a costs award when the claimant loses? There may be no agreed answer to that question in international arbitration, but decisions of the English Court of Appeal in 2005 and a Florida intermediate appellate court late in 2009 may show us the way by analogy. Mark Kantor, an attorney in Washington, DC and a member of Global Arbitration Review’s editorial board, reports