Any law can already be challenged. Any person can already be sued for any reason. Therefore any patent can be 1) challenged in court, or, 2) blatantly infringed upon, leaving you to pay lawyers to protect your idea.
Response:
You are correct only that any patent can be challenged in...
A method patent only covers the method, not the product. You can patent 100 different ways to skin a cat, but you are not protecting the skinned cat, just the method, so the patents are different.
I just have a few comments.
Patentability
Remember, when you read an application, it may seem that there are 100 patents on a particular product, however, read the claims and determine exactly what they cover. Moreover, a patentee can be their own lexicographer, so, read the claims in light...
