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What constitutes enough of a change in a patent for me to construct something for personal use?
I have absolutely zero understanding of patent law, and have only just discovered that it's illegal for me to reproduce a game called "9 Square in the Air" for personal use due to two "ornamental ...
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Why did my patent on game rules not prevent these subsequent design patents?
I invented a game whereby I took the game called 4-Square and raised it 7 feet in the air and so you play it like a 4-way volleyball game ... 4-Square in the air.
I obtained U.S. Patent No. ...
