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Questions tagged [lapsed-patent]

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Is this patent enforceable?

In reference to the patent: US6667877 Google says the fees are lapsed on this patent. IS this still enforceable?
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Applying for a patent after one has lapsed

I am interested in applying for a patent and found a similar one that has lapsed. May I apply for mine as a new one even though it is similar?
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Assuming a lapsed patent

I noticed that the patent for solidifying forms with cremated ash such as in ceramics, glass, or paint, has lapsed due to non-payment. Does that mean that I can purchase the rights to the patent? ...
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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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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
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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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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
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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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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 ...