Dave000The Trademark Law Revision Act of 1988, which added several amendments to the Lanham Act, left creation of the line between sufficient and insufficient disclosure to the discretion of the courts.
Which, with all respect, is why what you're claiming won't go anywhere. A lawyer for any defendant would simply need to show two things to the satisfaction of the judge:
1. That the majority of consumers understand the difference between purchasing an
upgrade of a software product vs. a
first-time purchase of a software product.
2. That it is unreasonable for a consumer to expect that a product advertised as an "upgrade" would give everything the consumer making a first-time purchase would receive, despite costing 30% of the price. Otherwise, the first time user would simply buy the upgrade, get all the features anyway, and pocket the difference.
I believe the judge would grant a summary judgement based on the merits of the case. Whether the judge would require the plaintiff to pay court costs would probably depend on how the judge was feeling that day