A bit late to the party, but even when threatening with insolvency-via-lawsuit, this would probably not work for them: - if he can prove the threat, the compan

A bit late to the party, but even when threatening with insolvency-via-lawsuit, this would probably not work for them: - if he can prove the threat, the company will be in an even worse position - given the rather lacking precedent (as pointed out by the sister comment), there's a good chance the suit would be thrown out pre-court and therefore be rather cheap - given that the OP seems to be a valued engineer, it is reasonable to assume that he has the f-you-money to fight this out - even if won, the drawn out battle would take far too long to fix the software in time and, given that they then lost a 10 million contract, they lack the motivation (and maybe money) to continue - lastly, even if they won after loosing the contract, they'd probably not be able to extract much in damage payments So it's a rather empty threat.