### Question
What is the definition of business day?


### Answer
The definition of **business day** is as follows in *35 U.S.C. § 156*:

> any Monday, Tuesday, Wednesday, Thursday, or Friday, excluding any legal holiday under section 6103 of title 5

#### Citation:
  - *35 U.S.C. § 156*
  - Heading: **PART II-PATENTABILITY OF INVENTIONS AND GRANT OF PATENTS > CHAPTER 14-ISSUE OF PATENT**

