Why play a game if you haven't much of a clue about the rules
Now there's a good question.
I don't have time to give Avtar a personal course in trademarks. Then again, I'm not an expert in bird identification. Fortunately, one doesn't need to be an expert in bird identification to get a reliable idea of whether one might be looking at a penguin or a peacock, since they are easy to tell apart. The expertise comes in when it is a more difficult problem. So, if you don't know the difference between, say, a crow and a raven, then stick to penguins and peacocks.
But don't spend your time complaining, "Ravens and crows are both medium sized black birds! How can anyone tell the birds apart! This is madness!"
What I suggested to you earlier, and what you seem resistant to wrapping your head around despite probably hundreds of posts I've written on the subject here at namepros, is that you need to forget what you think you know about trademarks, and come to grips with a basic understanding of what a trademark is. You can click on the link in my signature here and it will lead you to - literally - hundreds of legal cases in which I represented a domain name owner (and the occasional trade mark owner) in a dispute. Many of those were cases in which a common law mark was asserted. So, please, just because a concept is new to you, does not make it either new or the "death of domaining".
But what do I know, right? I'm just a guy who studied this stuff for a long time, and has been exclusively working in intellectual property matters since 1992, and then fairly exclusively in domain/trademark matters since 1998. Feel free to ignore me and believe whatever suits you.
Trademarks are hands off now unregistered trademarks too?
I don't know what "now" is doing in your sentence. Common law trademark rights are certainly enforceable. Again, your basic problem arises from not having ever reflected on what a trademark is. In the US and other common law jurisdictions, a "trademark" does not come about from applying to a government office for a certificate.
A trademark arises from the use of a word/symbol/logo/whatever in commerce on goods or services which provides the function of distinguishing those goods or services from those of others in the relevant market for those goods or services. If you want to, you can then go obtain registration of that trademark, which makes it easier to prove certain elements of a claim if you want to sue someone. In the US, if you sue someone for trademark infringement using a common law mark, you first have to prove that you have a valid trademark, and that the other side knew about it. If you have registered your mark, then the registration serves as presumptive evidence of the validity and ownership of the mark. Registration also provides 'constructive notice' of the mark, as your competitor is deemed to have known about the registration. So, registration provides a lot of advantages.
What registration doesn't do, and never has done, is establish a trademark in the first place. That's been your primary mental block for, gosh, as long as you've been posting nonsense here.
So, let's take your street address example.
There is an interesting building in New York City at 20 West 34th Street. Now, "20 West 34th Street" is of course a street address, and that's pretty much all it is. I'm pretty sure that, so far, you have no idea what is at 20 West 34th Street. Neither did I until a few moments ago.
However, the building at 20 West 34th Street is a very famous building, with a very well-known name, owned by a private company which provides leasing and other services that it advertises using the name of that very famous building. You probably have no idea at all what is at "20 West 34th Street", but I guarantee you have heard of the famous building, the name of which is certainly used as a trademark.
In that example, "20 West 34th Street" is merely a street address, with no particular significance to anyone. It is not used as the name of the building. It is not used in advertising promoting the building, the leasing services, or indeed the tourist attraction which is heavily promoted as the "Empire State Building".
Word Mark EMPIRE STATE BUILDING
Goods and Services IC 036. US 100 101 102. G & S: REAL ESTATE SERVICES, NAMELY THE MANAGEMENT AND LEASING OF REAL ESTATE. FIRST USE: 19310501. FIRST USE IN COMMERCE: 19310501
Registration Number 2413667
Registration Date December 19, 2000
Now, there are a couple of things worth noting. Since you've probably read virtually none of the hundreds of posts I've written here, one important thing to note is that they claim to be the successors of people who have been at it since 1931. One of the things that helps make a trademark distinctive is how long the mark has been predominately associated with a particular source of the goods or services. So, something like "American Airlines" which is American, and an airline, has become distinctive since they too have been at it since the 1930's.
Okay, so, let's take a stroll uptown from the Empire State Building and consider something like 30 Rockefeller Plaza.
30 Rockefeller Plaza doesn't have another name, but is frequently shortened to:
As "30 Rock", it is well known as the headquarters of NBC, and was used as the name of a TV series spinoff from Saturday Night Live. It was a TM for the series title, for sure, and may well be used by the building management as one.
Another example is the building where my former firm is located. I used to work at 1601 Market Street in Philadelphia. It's across the street from an office/condo/shopping complex and tower called "Liberty Place". Now, "Liberty Place" is certainly used by the folks across the street as a mark for their various services, but what about 1601 Market?
Well, okay, spend a minute (since I sure am) taking a look at this website, and tell me what you think:
http://1601-marketstreet.com/
Let that front page load and what do you see? Would you say that "1601 Market Street" is used:
(a) merely as an address to indicate where the building is located, or
(b) as an indicator of the brand of leasing services available?
If you have a hard time choosing between (a) and (b) there, then do yourself a favor and find another hobby. Perhaps birdwatching might suit you better.
And if all this is "TL;DR" for you, then stop asking impulsive questions if you don't want answers.