Judges have to use case law to come to a judgements...
Case law exists only when judges render a judgement. If case law exists, a judge can do one of two things: Side with case law, or render a judgement and thereby create case law.
Going past a sticker on a window just is not trespassing...this has been talked about many times on here.
If you knowingly enter contrary to the conditions stated by the owner through their sign, it is most certainly trespassing, and all the talk in the wold is so much hot air when the law states otherwise.
Trespassing takes place when you refuse to leave...
Yes...
...or if you have unlawfully entered - meaning you didn't have any right to enter.
A "No Firearms" sign is a "condition of entry." When you violate the condition of entry, you enter unlawfully, and are trespassing. It used to be signs like "No Colored People" were lawful conditions of entry, as well, but federal anti-discrimination laws put a stop to race, color, sex, creed, and a few other things, but only those things. "No Firearms" signs remain a lawful condition of entry.
An open business has an invitation to come in, making it a legal entry.
Nope. All businesses have "conditional entries," whether signs are posted or not: The body of law itself, whether it's posted at the entrance or not, is one condition of entry. If you're entering the process either while doing something unlawful or intending on doing something unlawful, you're also trespassing, not only against the owner, but against all people working at or frequenting the premises.
I think what's going on here is that some folks are so wrapped around the axle about carrying EVERYWHERE they bend over backwards trying to twist the law so it suits those of us who carry firearms. Trust me - I wish it were so!
However, as a property owner myself, I respect the rights of property owners as much as I respect our Second Amendment rights. I'll fight tooth and nail against abuses of the law such as the no firearms ban at the Colorado State Fair in Pueblo (see my treatise on this,
here), but that's public property, not private property. I might despite the owner of a local store for posting a "No Firearms" sign, as I think that's disrespectful of our Constitution and the principles on which our nation was founded, but confound it! It's still
their property, not mine, and while I disagree with their decision, I will respect it.