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2
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1answer
61 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". ...
0
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0answers
32 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?
0
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1answer
69 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? ...
2
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3answers
4k views

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

US6148942 "Infant stroller safely propelled by DC electronic motor" According to Google Patents the 6148942 patent is status Lapsed and according to Public PAIR its status is Expired as of 2008. ...