Negotiators of the Trans-Pacific Partnership free trade initiative still see no clear path to signing an accord, six months after missing their primary deadline at the end of last year.

Chief negotiators of the TPP deal from Japan, the U.S. and 10 other Pacific Rim countries wrapped up a meeting Saturday in Ottawa without agreement, even on a date for the next meeting, due to major differences over contentious issues such as intellectual property.

Observers say some negotiators may start questioning whether the TPP negotiations can maintain momentum as the United States, the leader of the process, is unable to make any game-changing decisions in the coming months due to midterm elections in November.