Could TX SB8 (the controversial abortion law) be nullified by a declaratory judgement?
Suppose a would-be abortion provider were to file suit against Texas Right To Life, who are running the ProLifeWhistleblower.com website, arguing that SB8 is an effective ban on abortion and hence unconstitutional, and suppose that the court agrees and grants a declaratory judgement saying so.
This would block Texas Right To Life from suing an abortion provider under SB8, but it wouldn't stop any John or Jane Doe from suing, because they were not parties to the original suit.
Suppose there is a subsequent suit by John Doe against Planned Parenthood for an abortion in Texas. Could that lawsuit be dismissed on the grounds that Doe is identically situated to Texas Right To Life, and it is already established that such a suit cannot lead to an award of damages?