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1answer
23 views

Is US 4,915,276 A still owned by Ermin Devito?

In reference to the patent: US 4,915,276 A Is this patent still owned by Ermin Devito or somebody else? If it is, how can it be re-claimed by him or his family?
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1answer
43 views

What is the priority date of US 4,851,616 A?

What is the correct priority date of US 4,851,616 A, and what are the legal ramifications if an inventor deliberately misrepresents the priority date based on an error in the patent? Please provide ...
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1answer
98 views

Possible to file for a patent, despite super broad, expired patent already existing?

I was looking to patent an invention I feel to have novelty, but I came across this one pre-existing US patent while doing some research. It was filed over 20 years ago and has since "lapsed". ...
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0answers
81 views

Why would somebody allow USP6293874 to lapse?

Why would somebody allow such a valuable patent as USP6293874 to lapse for non-payment of maintenance fees?
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1answer
77 views

Patent #US7032911 - does this block me from doing something very similiar?

I had a very similiar idea with a few small production changes but would have had the same use. Would this patent stop me from legally producing a similiar item and what are the legal consequences? ...
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10k views

What is a “Lapsed Patent” and which concepts (if any) may still be protected by this Patent?

US 6,148,942 "Infant stroller safely propelled by DC electronic motor" According to Google Patents, US 6,148,942 is Lapsed and according to Public PAIR its status is Expired as of 2008. Google ...