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The US Patent system was viewed as so important that it was enshrined in article 1 on the US Constitution. You may not like it, but it is here to stay.
As for the Comscore case, you are wrong about the three companies doing visibility before Comscore. None of them had anything that works and would pass a requirement of measuring ad visibility in unfriendly iframes, a critical issue given that those iframes are used for the majority of ad networks and ad exchanges, which constitute the majority of display inventory.
As for the startup argument, startups a great at introducing innovative products. But, that does not give them license to copy someone else's IP, and violate a right guaranteed by the US constitution if they are indeed infringing.
As one of the comments said, if you don't like patents, then try to change the patent law, but just realize that this is not any law that you would have to change, it is the US constitution. Also, next time you develop anything valuable instead of blabbing about stuff you don't know, you may feel the need to protect what you created.
9 months, 1 week ago on ComScore’s Lawsuit Against Three Startups Is Pretty Deplorable