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1 vote

It is ok to have "a turbine blades" in a claim as plural?

It seems you are worried about what is called 'antecedent' problem in claim construction. For which, you are inclined to use 'a + 'turbine blades'. When an element is mentioned first time in claim ...
  • 1,062
1 vote
Accepted

How could patents last longer than the term prescribed by law?

Such an extension is not possible. The Time article makes this slightly clearer: (emphasis added) …in 1998, Wi-LAN bought 49% of Lamarr’s claim to the lapsed patent A patent can be assigned after ...
  • 6,103
1 vote

Patent Term Adjustment

A granted US patent usually lasts 20 years from the application date (assuming all the renewal fees are paid). So, if you applied for the patent on 1 July 2001, and it was granted, it would last until ...
  • 6,103
1 vote

Is a 1954 patent still worth anything?

As an expired patent it has no value. In 1956 patents had a term of 17 years from the date of grant, and maintenance fees did not exist in the US until 1980 or so. Today patents terminate 20 years ...
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1 vote

Is a 1954 patent still worth anything?

A patent is valid for 20 years (17 then) today assuming renewal fees are paid Now this patent may be worth something in a nice frame
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