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This paper examines the recent developments both in International Investment Treaty negotiations and investor-State disputes.

It highlights the intense activity in the conclusion of new International Investment Agreements (IIAs) in 2009 and points out trends such as the effect of the entry into force of the Lisbon Treaty, the creation of regional investments areas, and the increase in renegotiation of Bilateral Investment Treaties (BITs), among others. The paper points out the continuing rise of investment treaty claims and the large number of dispute settlements as the important trends in investor-State disputes.