General Rules for Patent Drawing

General Rules for Patent Drawing

Creating a drawing for patent is much different from the one we did in our school days.
Unlike the drawing in school, here, we have certain rules and we need to follow these
rules religiously, failing which can cost a rejection in the patent application. No matter
whether the drawing is a utility patent drawing or a design patent drawing we need
to follow these golden rules put forth by important patent office like USPTO.

This is an article that will highlight some of these golden rules which a draft-person
should follow while creating a patent illustration for an invention.

General Rules for Patent Drawing

Showing features clearly: No matter whether you are showing a device, process or a
design putting each and every feature of the invention in paper and that too accurately
is important. Each feature of the drawing should be properly documented with both text
and illustration to assure that the patent examiner fully understands the feature of the
item without putting stress on their eyebrows. Failure to include all the details may lead
to rejection of the patent.

For example, if you have a drawing of a mobile phone that has many features we need
to show each and every feature of the mobile phone so as to have a clear
understanding of the invention.

Neatness: Even if, you present each and every feature of your invention accurately but
the drawing has strikethroughs, over writings and alterations you risk rejection. Though
it is not documented anywhere that your patent illustration should be neat and clean
still patent office like USPTO want you to present a neat and error-free drawing that is
readable.

Legibility: Legibility is the ability to distinguish various letters and is another criterion
a professional draft person needs to follow where each and every text, word and
image should not overlap its adjacent element. Failing to achieve optimum legibility
could lead to rejection of your application.

Readability: Readability is another criterion that is not documented anywhere but we
need to follow it during this whole process. Spacing within words, between words and
between lines must be such that the resulting text is again visually readable.

Visually Appealing: Not only you need to have a legible drawing but it should also be
visually appealing where your drawing sheet should be devoid of folds, crakes, holes
and creases.

Use Metric System: Any dimension and sizing information presented in a patent
disclosure must be given in metric inches preferably centimeters in case of small
devices millimeters can be used. Though USPTO doesn't forbid using English
Engineering Units still they prefer metric system and thus we need to follow this rule as
well.

Sheet Size: Sheet size is another important criterion that we need to follow while
making a patent drawing. Patent office like USPTO is very specific on sheet size and
allows only two kinds of sheet size a) 21 cm x 29.7 cm which is also called as A4 size
and b) 21.6 cm x 27.9 cm which is used throughout the United States.

Putting it all together, we can say that creating an illustration for invention is a
science as well as an art that requires adequate knowledge of regulatory norms as well
as an artistic approach and thus you can do justice with your invention only if you are
an experienced draft-person.

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