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Patent Filing and Prosecution
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   Abandoned patents
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JZ
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Re: Abandoned patents
« Reply #5 on: Sep 9th, 2006, 3:51am »
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Can I ask why 1995-2002 time frame is chosen to see the patent maintenance?
 
Thanks!
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JimIvey
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Re: Abandoned patents
« Reply #6 on: Sep 9th, 2006, 8:55am »
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on Sep 9th, 2006, 3:51am, JZ wrote:
Can I ask why 1995-2002 time frame is chosen to see the patent maintenance?

I'll take a W.A.G. (Wild-A**-Guess):  2002 is the later limit because the first maintenance fee is due at 4 years from issue.  This is 2006; so, the most recently issued patents for which maintenance fees would be due would have issued in 2002.  1995 is probably as far back as digital records are readily available for that sort of information.
 
How'd I do?
 
Regards.
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James D. Ivey
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Re: Abandoned patents
« Reply #7 on: Sep 9th, 2006, 11:31am »
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Yes, Jim.  Any US patent granted after 2002 has not yet required payment of a maintenance fee.
 
The 1995 date was not correct.  I should have written 1989 – 2002.  All patents granted before 1989 have already expired, so maintenance fees are irrelevant.
 
By the way, the US first required maintenance fees for patents granted after Dec.12, 1980.  
 
Here’s an interesting observation.  In the very unlikely event that a patent is granted with all claims based on a priority date of 16 years earlier, no maintenance fee would be required.  The patent would simply expire after four years.
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Richard Tanzer
Patent Agent
JZ
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Re: Abandoned patents
« Reply #8 on: Sep 16th, 2006, 5:34pm »
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Hi, Jim and Richard:
 
Thanks much for your quick response and detailed explantion.
 
Your input is very helpful.
 
Regards,
JZ
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Rolf
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Re: Abandoned patents
« Reply #9 on: Sep 18th, 2006, 11:38pm »
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Hi,
 
you can also obtain free patent families with legal status information from
 
www. ipnewsflash. com
 
to find out, where a certain idea is also protected.
 
Rolf
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