Consult Before You File

Avoid and correct possible issues that may arise during the Patent Drawing process.

• Reference Lines Without Any Numbers – if you are going to include a reference line, it must be accompanied by a number
• Scale Not Large Enough – patent drawings will eventually be scaled down by 70% for publication, so make sure you are taking advantage of the whole page
• Lines, Numbers & Letters on Drawings Not Uniformly Thick and Well Defined –  you want to make sure that these elements are readable and consistent in thickness
• Lines, Numbers & Letters not clean, durable and black – all lines, numbers and letters need to be legible without any random markings or smudges
• Large Solid Areas Shaded in Black –
• Shade Lines are Pale, Rough, and Blurred – you always want
• Numbers & Reference Characters not Plain & Legible
• Numbers, Letters & Reference Characters Must be 0.32 (1/8 inch) in Height
• Lead Lines Should Not Cross
• Drawing Sheets Not Numbered Consecutively