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   Author  Topic: unity of the invention  (Read 846 times)


Posts: 1
unity of the invention
« on: Sep 10th, 2007, 10:49am »
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i am drafting  method claims. A method comprises three essential steps  for the production of a  powder product X, said product X may be also produced as a supported solid product, in such case the method requires two adittional steps.
1-a method for production of a product X which comprises the following steps, A,B and C (powder product X)
2-the method according to claim 1, wherein further comprises D and F (supported product X)
Said claims are correct or they may lack unity of the invention?  
I attemp to draft one independent claim by category
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  mbycer   MBycer

Posts: 127
Re: unity of the invention
« Reply #1 on: Sep 10th, 2007, 12:06pm »
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I hope another comments, but my initial reaction is that there is no problem unity with placing a single dependent claim  on one independent claim.
Problems arise with multiple indep claims or two dep claims that strike in two directions from a single indep claim that might be struck for obviousness.
Hope this helps!
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Matthew L. Bycer
Registered Patent Attorney
Senior Member


Posts: 2584
Re: unity of the invention
« Reply #2 on: Sep 10th, 2007, 6:32pm »
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Generally speaking, I'd agree with Matt -- one independent claim = 1 invention.  However, I have friends who practice biotech/pharma patent law and I've heard horror stories of 100+-way restriction requirements.  For example, a claim may read on 100+ chemical compounds and the examiner asserts that each is an independent invention.  I mention that only because you're dealing with something that might lend itself to that sort of insanity.  So, can't really say until you give it a shot -- or ask someone with more familiarity with chemical practice than I have (not hard to find).
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James D. Ivey
Law Offices of James D. Ivey
Full Member


Posts: 434
Re: unity of the invention
« Reply #3 on: Sep 10th, 2007, 7:43pm »
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If A, B and C share common structure and/or function with D and F, then I believe there is an unity of invention.
If A, B and C have no relatedness to D and F, then restriction requirement may be proper.  
I hope this makes sense.  
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Registered Patent Agent Specializing in All Areas of Biotechnology
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