The league, which is preparing to approach the London high court, feels it is being discriminated against because the ICC has refused to recognise it.
The ICL has been denied access to stadiums in India because it is considered by the ICC to be 'unauthorised' cricket, and boards across the world are refusing to include ICL players in their Test teams.
These measures have hit the league hard with ICL sources privately conceding that the Twenty20 competition has little more than another year of viable operation.
The ICL believes it has a strong case that the bans are an unlawful restraint of trade.
A separate petition has been filed by the ICL in the Delhi high court, challenging the position of the Board of Control for Cricket in India (BCCI). But that will not conclude for 12 months and ICC sources privately believe that if it is made a 'principal respondant' in the petition it will be for the purpose of calling the BCCI to the witness box within a shorter timescale.