David Allen Green is a contract lawyer. He used to do EU contracts too i believe.
He has this to say on the subject:
David Allen Green @davidallengreen
Right, I think I have worked out from various primary sources the relevant terms of the AstraZeneca contract
Summary post at FT at lunchtime, followed by 'working out' post at @lawandpolicy this afternoon
This has been a fun detective exercise
In essence, if you read both the public statements of the AstraZeneca CEO and the European Commissioner they are both effectively right, because they are talking about slightly different things
Andrew Dowd @andrew_dowd
How is it resolved though, when “everything one can” involves violating another contract which may contain a firm commitment? Could one party force [X] to honour their contract at a cost of breaking another contract?
David Allen Green @davidallengreen
ps
An English court would find it hard to accept that an 'endeavours' clause would require you to commit the tort of interfering with another contract
So if AZ are in breech of contract with the EU the EU still has an issue.
The EU can sue AZ. But AZ is still contractually obliged to both the UK and EU. It has a choice to either fulfil one at the expense of the other or breech both and risk ending up getting sued by both. Now in this scenario you would probably fulfil one - and you would base it on the importance of your customer, the size of the order and when the order was placed. You wouldn't leave yourself exposed to two grumpy customers.
It also explains the UK government staying well out of it, because if its a contract dispute between AZ and the EU the EU cant force AZ to breech their contract with the UK to fulfil theirs. They can only apply political pressure and make life difficult for AZ. But AZ is caught between a rock and a hard place because it doesn't want two grumpy customers.
Plus the factories the EU want supply from are in the UK. And that is a bit of an issue if the EU ultimately want that vaccine. They cant force the UK government to release AZ from their contract... In all scenarios the EU still end up without the vaccines they want.
That leaves them only with the trade war option. At which point Pfizer are legally liable for none delivery. And the UK can sue. But then the uk can legitimately say this is a trade war and withhold stock for pfizer production, at which point the EU can only really go full on 'sanction, trade war, board up the tunnel'. But they still have no more vaccine.
Will be interesting to see David Allen Green's full comments on this.