Thinking on it, it's likely that since this is the stuff they can legally patent for their own purpose. Anywoo, this is going to be a must watch moment

It seems like there's a very specific patent for the Pokeball catches, so my guess could be correct after all. I suspected it had to be something from Red & Blue since that's when Nintendo would be involved personally and not just TPC/GF.

If its to do with Pokeball captures, they why only Palworld and not Coromon, TemTem or Cassette Beasts?

They all use similar capture mechanics with the main difference being the items. 

You're kinda answering your own question here. The fact that Palworld uses a ball-shaped object for the catching as opposed to literally anything else (cards, triangles, fidget spinners, etc.) may very well be the sticking point.

OK, I heard rumours and you have to take this with a big mount everest of salt. But the rumours say the patents or some of the patents in question are:

* mounting/unmounting a flying mount in overworld

* throwing an object at a creature in overworld

* releasing creatures in overworld

At least for one I found by scouring the patent-search machine one patent that might fit. Note it is an japanese patent and it was applied for in July and granted in September this year. Or maybe reapplied. I don't know. Google provides a translation:

https://patents.google.com/patent/JP7545191B1/en?assignee=nintendo&after=priority:20240430

Some juicy bits:

"Conventionally, there are game programs in which a player character throws a ball at a character in a virtual space, capturing the character and setting it in the player character's possession (for example, see Non-Patent Document 1)."

...

"However, in the game program disclosed in the above-mentioned non-patent document 1, the ball can only be thrown to capture characters during battle, and the ball cannot be thrown on the field."

...

"One configuration example of the game program of the present invention causes a computer of an information processing device to switch at least between a first mode and a second mode based on a first operation input, and in the first mode, causes the computer to determine an aiming direction in a virtual space based on a second operation input, and causes the player character to fire an item that affects a field character placed on a field in the virtual space in the aiming direction based on a third operation input, and when the item is fired at a location where the field character is placed, gives an effect associated with the item to the field character, and in the second mode, causes the computer to determine an aiming direction based on the second operation input, and causes the player character to fire a combat character that will engage in combat in the aiming direction based on the third operation input, and when the combat character is fired at a location where the field character is placed, starts a battle on the field between the field character and the combat character."

I read that as aiming in an overworld, there normal movement and camera movement is mapped to your sticks, so you press another button to switch to aim mode, aim with the stick (second input) and throw by pressing another button (third input).

OK, I heard rumours and you have to take this with a big mount everest of salt. But the rumours say the patents or some of the patents in question are:

* mounting/unmounting a flying mount in overworld

* throwing an object at a creature in overworld

* releasing creatures in overworld

At least for one I found by scouring the patent-search machine one patent that might fit. Note it is an japanese patent and it was applied for in July and granted in September this year. Or maybe reapplied. I don't know. Google provides a translation:

https://patents.google.com/patent/JP7545191B1/en?assignee=nintendo&after=priority:20240430

Some juicy bits:

"Conventionally, there are game programs in which a player character throws a ball at a character in a virtual space, capturing the character and setting it in the player character's possession (for example, see Non-Patent Document 1)."

...

"However, in the game program disclosed in the above-mentioned non-patent document 1, the ball can only be thrown to capture characters during battle, and the ball cannot be thrown on the field."

...

"One configuration example of the game program of the present invention causes a computer of an information processing device to switch at least between a first mode and a second mode based on a first operation input, and in the first mode, causes the computer to determine an aiming direction in a virtual space based on a second operation input, and causes the player character to fire an item that affects a field character placed on a field in the virtual space in the aiming direction based on a third operation input, and when the item is fired at a location where the field character is placed, gives an effect associated with the item to the field character, and in the second mode, causes the computer to determine an aiming direction based on the second operation input, and causes the player character to fire a combat character that will engage in combat in the aiming direction based on the third operation input, and when the combat character is fired at a location where the field character is placed, starts a battle on the field between the field character and the combat character."

I read that as aiming in an overworld, there normal movement and camera movement is mapped to your sticks, so you press another button to switch to aim mode, aim with the stick (second input) and throw by pressing another button (third input).

In the date part of the google link says "After: priority 2024-04-30". If that is the date the patent was filed, it means they filed AFTER Palworld released (january 19th 2024 in early access). Kinda makes me feel they just did it to fuck with Palworld. This affair becomes nastier by the minute.