Despite losing at a judicial review earlier this year, BMA pensions committee chairman Dr Andrew Dearden said the BMA would continue to fight rules that mean contributions by female GPs before 1988 are worth less to their widower than an equal contribution by a male GP is to his widow.
The judge at the judicial review said the situation was 'discriminatory', but rejected the BMA's case on the grounds of cost.
It has been estimated that changing the rules across all public sector pension schemes would cost the government £4 billion.
Dr Dearden said the BMA planned to appeal, and could then go to the European Court of Human Rights. He also revealed that unions - not including the BMA - were planning a judicial review on changes to the way public sector pensions track inflation.
From June, public sector pensions began tracking the consumer price index instead of the retail price index.