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1answer
18 views

Obtaining Design Patent on expired similar design patent

I have designed and manufactured a sport goggle similar, but not identical to expired (or non-renewed) patent 4176410. My goggles have a different style, configuration (pointed edges vs squared), ...
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0answers
5 views

Expiration date for patent EP1355915 [duplicate]

Could any one tell iif the patent EP1355915 has already expired
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1answer
37 views

WO and PCT patents do they have different jurisdictions?

WO and PCT patents do they have different jurisdictions ? If the WO patent has expired, can the PCT patent still be valid? If the PTC patent has expired, can the WO patent still be valid? WO ...
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votes
2answers
151 views

Failure to pay maintenance fees

If an inventor submits an idea and it has been accepted, and he makes no tangible device (it remains intellectual rather than carried out). But then the inventor does not pay the maintenance fees, ...
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1answer
39 views

My patent expired before I successfully marketed it, can I successfully market it?

My patent expired some years back. I was not knowledgeable as to how to market it back then. Could I create a new version of it and patent that? I know I could easily market it, as is, on Youtube now. ...