In one study by the US Small Business Administration, they looked at 2007-2009 (to understand economic activity during the height of the Great Recession) and noted 42% of companies that file 15 or more patents over the two-year period had 500 employees or less (which is, to them, a small to medium business).<p><a href="https:&#x2F;&#x2F;www.sba.gov&#x2F;sites&#x2F;default&#x2F;files&#x2F;rs411tot.pdf" rel="nofollow">https:&#x2F;&#x2F;www.sba.gov&#x2F;sites&#x2F;default&#x2F;files&#x2F;rs411tot.pdf</a>