This is kind of fascinating, because if every other country that had a territorial dispute were to follow up with this tactic, the entire patent system would go haywire.
It is not about dispute but about companies leaving the market.
This was done in WWI and WWII with respect to German held patents and copyright. Not new at all.
It already went haywire with China. It already went haywire with patent trollism.
"Between armies, the laws are silent".
The original script of "Casablanca" had Major Strasser and his men singing the "Horst Wessel Lied", but it was nixed by the Warner Brothers suits because that song was under copyright. They substituted a song from the 1840s, "Die Wacht am Rhein" (which, because of the film, everyone believes is a Nazi song).
Of course, by the time the film was widely popular, the Eighth Air Force was pounding the German copyright office to dust, and the threat of a lawsuit was no longer relevant.
Zelensky missed the lesson that, "between armies, the laws are silent".
By freezing their foreign reserves (most of them), which in practical terms means the US will dictate to whom and when the money is ever released and under what terms, we pretty much remove any real incentive for them not to do this.