isn't this just publishing? no formal procedure required, no government, no patent office, no filing fees, put your a record of your work somewhere that people can find it and then it can be used as prior art in a dispute.
Yes publishing work will allow you to bring it up as a defendant. But by the time you’re called to a law office in west Texas you’re already out millions in legal fees and still run the risk of getting a judgement against you.
What I think they were asking for is something more formal.
Patent trolls often go after individuals and small firms specifically because they can get them to settle as they cannot afford a legal fight. Most make the bulk of their money by without ever getting any judgements.
It’s essentially a legal-system backed shakedown.