I am not sure why this is being downvoted. If a Russian court determines (and/or the developer is forced to agree) that the BSD license was issued by someone who did not own the intellectual property, doesn't that create a significant legal issue for anyone who is using nginx under that BSD license since that license would no longer be valid?
Doesn't the potential for this exact sort of issue point out a flaw in how copyright law works (especially under international law?)