Can you guess what a press release, a contract manufacturer’s quote, an offer to sell a new product, a trade show display, a grant application, and a regulatory submission may all have in common when it comes to patenting an invention? They can all be forms of stealth prior art that could prevent patent protection. Stealth prior art is prior art that does not attract attention.
Consider the story of Wayne Pfaff, who fi led an application for a patent on a computer chip socket on April 19, 1982. The U.S. Patent and Trademark Offi ce duly examined the application […]
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