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2answers
990 views

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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1answer
723 views

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. ...