According to the article, IBM did this same thing to Twitter (suing for ridiculous patent claims immediately prior to an IPO, in order to pressure some sort of

According to the article, IBM did this same thing to Twitter (suing for ridiculous patent claims immediately prior to an IPO, in order to pressure some sort of settlement). I don't know much about the stock market, but this doesn't make a ton of sense to me. If the claim really is meritless (which, it certainly seems to be), it shouldn't effect the fundamental value of Airbnb's business. If the underlying business is unaffected, won't whatever PR-related impact the lawsuit has on stock prices be erased rather quickly? Or would investors still price in some risk as long as the lawsuit was pending, even if they felt confident it would be thrown out?