When a limited calendar was initially announced by F1, ROKiT says it offered to pay a percentage of the agreed fees.
However, the sponsorship deal was cancelled by Williams in May, before the season resumed, at a time when the team was in negotiations with potential new owners.
The dispute over the unpaid fees for 2020 subsequently went to the London Court of International Arbitration, where Williams ultimately proved successful.
The new court submission claims that "the arbitrator was not aware of the fraudulent concealment of statements of material facts by defendants that were not discovered until after the arbitration had concluded," and that ROKiT "learned that the car was never capable of performing to the standards that defendants had guaranteed to the plaintiffs, and that defendants were aware of and concealed this fact".
It adds that the "defendants intentionally and fraudulently concealed the fact that Williams Engineering simply did not have enough money to develop the F1 car".
The claim says that "as a direct and proximate result of the fraudulent statements made by the defendants, plaintiffs have suffered significant financial loss and damage to their goodwill and business reputation," and asks for compensation for "an amount in excess of $149,528,550 dollars".