Instead of 6 month, what gave researchers a leg to stand on when negotiating a shorter embargo period with publishers, the Canadian Institute for Health and Research (CIHR), wants scientists to publish within 12 month.

As of January, 2013, CIHR-funded researchers will be required to make their peer-reviewed publications accessible at no cost within 12 months of publication – at the latest. While the revised Policy provides researchers with clear guidance on CIHR’s minimum expectation, in the spirit of public benefits of research, CIHR continues to encourage researchers to make their publications accessible for free as soon as possible after publication. Compliance with the Open Access Policy will continue to be monitored through end of grant reporting.

See also this bog entry.