There is no trespassing on IP. There is IP infringement, which is an entirely different concept. Trespassing is a physical violation of (real) property. IP infringement is literally just breaking the law, which, in the case of IP, is breaking a statute. Also, IP is not property. It’s called property, but it is not property in the same way that you don’t own your reputation. We can say and enact statutes that say you own your reputation, but it doesn’t make it so. All that sort of law says is that you have the right to punish someone for damaging your reputation, but your reputation only exists in the minds of everyone but yourself.
So yes, you can have a “property right” to punish someone for damaging your reputation, but that doesn’t mean they are damaging your property. It means that you have the right to exclude others from using their property in some specific fashion. That’s what IP is. It’s a metaphor for property but it isn’t property. Sure, you can “own” a poem, but what that translates to is that you now have the right to exclude others from using their property to recreate that poem. When others recreate that poem, it does not mean that suddenly they have trespassed on your property.
All rights are property rights, but that doesn’t mean that the poem you right is your “property”. It’s an idea. It only exists in people’s minds or when it has a physical manifestation in actual property. Copyrights and patents state that you own the idea, and that if anyone creates a physical manifestation of this idea, they are violating your property. This is the contradiction. It is saying that you both simultaneously own the same good without joint ownership. I may own the paper and ink, but if I configure them in such a way that they are the same as your copyrighted poem, now you own it. Except that I own it too. And we can’t both own it.
So sure, the state says that your ownership supercedes my ownership, so in effect there really is only one owner, and that’s you. But the state doesn’t say that I am to transfer my physical property of paper and ink to you. It says that I am to destroy it or change it somehow. But in the process, the state still acknowledges that the paper and ink are mine, but they also acknowledge that it is yours. That’s why it is a contradiction. The idea of IP is a contradiction.
That was Kinsella’s argument in that case, but it is not his only or even his main argument against IP. It was only one thing to consider out of all of what he knows about IP. In practice there cannot be a contradiction, because whoever has the right of exclusion is the owner in the eyes of the law (right or wrong), but that was not Kinsella’s point. His point was that there cannot be two simultaneous owners of the same object (excluding joint ownership, which was not mentioned in that section of the talk), and that is precisely what the arguments for IP allow: IP acknowledges two owners in theory even if it doesn’t in practice.
I agree with this. I only add that I find it highly unlikely that IP as it exists today would exist in a free society. I base this off of the fact that IP as it exists today is a product of the state, whereas common law and customary law systems did not have IP in a way that resembles statutory IP at all.