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1answer
62 views

How do I know if I infringe a patent?

I am developing a 3D modeling application. How can I know what is considered as part of the sketchup patent? The extrude tool is obviously common to all 3D modeling softwares, that makes me think ...
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1answer
32 views

Is one drawing enough for a business process patent for software algorithm?

I am filing a patent for a software and I am using a patent service. They have given me 1 drawing for my process and I am concerned this may not be enough. It does describe my process but does 1 ...
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2answers
60 views

Can drawings alone act as prior-art for a new invention filed?

Can a drawing by itself count as prior art, or is a text description of the drawing needed as well? For example, fig.9 of US3110626 was used against EP0030192 T204/83. Was this finding appropriate?
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1answer
83 views

Patent terminology: schematic vs diagrammatic views

In a patent application, I ran into a statement that a drawing is "a partially schematic and partially diagrammatic view". I had though that schematic views and diagrammatic views are the same thing: ...
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0answers
4 views

Clarifications during amendments

Can one during amendments add clarifications, in particular to explain an algorithm executed by a micro processor. Can one add drawings to explain how the algorithm works. What section of the US ...
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1answer
255 views

Color and shading in patent application?

It seems USPTO allows shading but, for example, the Chinese's counterpart doesn't. So what is the best way to do drawing internationally? I.e. if the application with shaded drawing is filed in the ...
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1answer
16 views

Where are the drawings for wo2004066851a2

I have an invention that I want to patent, but it sounds similar to wo2004066851a2. I'm hoping that the drawings of wo2004066851a2 will be helpful to me in figuring out whether this is what I am ...
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0answers
63 views

Drawing quality after the PTO gets done with them

I have a Design patent and a Provisional patent in play at the moment. I looked at the progress in PAIR for both and things seem to be hunky dory. I decided to have a look at the drawings portion in ...
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2answers
2k views

What is the best free reliable patent drawing software?

Does anyone have any patent drawing experience? I'm looking to do it on my own and I figure there's some decent software out there somewhere. Thanks.