I had no idea that Grana Padano was a PDO. I can't help but feel that going around cease and desisting people that are passionately pursuing hobbies is a really bad idea. It reminds me of when the word Champagne was taken to court. The court ruled that the word could only be used by wine makers in the given region. What this resulted in was not I believe good for the Champagne region, despite the intent. The mind sha…
The problem is that there are always others who will piggyback of your product to boost their own sales, while not maintaining the quality standards that led to the name recognition in the first place. In California they also sell "Californian Champagne", some legal quirk allows it. There is no problem with their wine, it's fine wine (the one time I had it). It's just NOT Champagne. That doesn't make it bad wine, but…
It basically depends on the trade deal. Anywhere in the EU, "Champagne" has a very definite geographic meaning involving a region in France. Likewise "Feta" cheese, "Port" wine etc etc.
But elsewhere it depends on the nature of the deal with the EU.
E.g. Western Cape, South Africa makes good sparkling wine, but the EU flexed muscles in the trade deal, and now they don't call it "Champagne" or even "Champagne-style". 1) Though local "Port" and "Feta" got to keep those names.
I assume that the USA had a stronger hand and got a better deal in this regard.
A quirk of brexit is that the name "Scotch" Whisky may lose EU protection. 2) To Scotland's loss here.
1) https://www.bubbleclub.co.uk/blog/whats-methode-cap-classiqu...
2) https://www.forbes.com/sites/felipeschrieberg/2019/01/16/no-...
https://www.businessforscotland.com/scotch-whiskys-protected...