The oil-rich kingdom of Brunei is expected to ratify a major new trade deal spanning the Pacific Rim in the second half of 2019, Bloomberg Law has learned.

Brunei plans to ratify the Comprehensive and Progressive Agreement for Trans-Pacific Partnership by year’s end, said Alexander Feldman, president of the U.S.-ASEAN Business Council. ASEAN is the Association of Southeast Asian Nations, of which Brunei is a member.

Feldman spoke with Bloomberg Law on the heels of a business mission to the micro-state that included talks with the foreign minister, the economy minister, and other key trade policymakers.

“When I asked the...