Ripple Labs Inc and R3 Hondco LLC filed lawsuits against each other on Friday. U.S. blockchain start-ups are suing each other over an options contract to purchase Ripple’s digital currency XRP, according to lawsuits filed on Friday.

The twin set is with respect to the options contract that grants R3 the right to purchase up to 5 billion XRP tokens at $0.0085 USD each until September 2019, but for now, Ripple’s attempts the termination of this contract giving the reason and alleging back over R3, that the company terminated this contract because R3 had abortive to deliver on another parallel technology partnership agreement to give Ripple access to its network of banks and help promote its technology. It asks the court to declare that the agreements are invalid and order R3 to pay damages in an amount to be determined at trial.

Both block chain start-ups have entered into the deal in last September, that was official through the issuance of an options contract to R3. As per the lawsuit by R3 alleges that Brad Garlinghouse, Chief Executive of Ripple, seeking to cancel the options contract via an email which was sent to R3’s Chief Executive, David Rutter. In response to the email, the counterpart quarreling that the contract cannot be dismissed.

As per the terms of this options contract, R3 is now seeking the court to rule that R3 is entitled all rights to purchase defined in the 2016 contract to buy XRP at the predetermined price. With XRP tokens now trading for more than $0.20 each, the contract would entitle R3 to purchase tokens from Ripple Labs before immediately selling them for an approximate gain of over 2000%.