In the rush to file a patent, some inventors make the mistake of filing “informal” drawings as part of their application, that is, drawings that do not comply with USPTO utility patent requirements. Examples include hand sketches and low-quality photographs or micrographs. While informals can communicate important elements of the invention and are of great use to a patent illustrator or draftsperson, they will not help a patent pass examination. Because they play a crucial role in defining a utility patent’s claims, utility drawings are subject to strict requirements regarding views, proportions, sequencing, lines, numbers, letters, and other elements. These specifications can be easily overlooked by a layperson, even by those generally familiar with patent technicalities. Thus, the safest option is to engage a professional specialized in patent drawings who understands the varied demands of patent offices.