This is part of a series of articles on the basics of writing a patent specification. The full series covers the description, claims, drawings and abstract. The overview article and starting point is “How to write a patent specification“.
The series uses a silly, fictional invention as an example: a rotary cutter for shearing sheep. This is probably a terrible invention but, in reality, most are.
The description is the meat and bones of a patent specification. It describes what the invention is and what it does, it explains what its advantages are, and it describes variations and modifications that could be made to the core idea. Importantly, it must provide sufficient information to enable a skilled reader to make the invention. You cannot patent an invention and also keep its essential details a trade secret.
A common error when writing the description is to put everything in vague or overly general terms. The motivation behind this error is the fear that precision means that a competitor could easily work around a granted patent with a minor modification. But vague writing hobbles the whole specification and reduces the chances of obtaining any granted patent at all. The key is to write with clarity and precision and then to build carefully crafted generalities onto that solid foundation.
A description is made up of three main sections, the Background, the Summary and the Detailed Description.
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