Arbitrators in investment treaty arbitration have not been reluctant to express their views on the access to international arbitration, provided for in dispute settlement clauses in investment treaties, as forming a part of substantive investor protection. The present paper aims at answering the...

Screening powers of arbitral institutions over requests initiating investment arbitrations are often justified by the need to prevent embarrassment of states and to avoid unnecessary costs. This Chapter examines possible effects of such powers, particularly on the arbitral development of the...