Perenco Ecuador Ltd. v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (Petroecuador), ICSID Case No. ARB/08/6, Decision on Annulment 28 May 2021 - World Trade and Arbitration Materials View Perenco Ecuador Ltd. v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (Petroecuador), ICSID Case No. ARB/08/6, Decision on Annulment 28 May 2021 by - World Trade and Arbitration Materials Perenco Ecuador Ltd. v. Republic of Ecuador and Empresa Estatal Petróleos del Ecuador (Petroecuador), ICSID Case No. ARB/08/6, Decision on Annulment 28 May 2021 33 4 World Trade and Arbitration Materials