There is a slew of typical first day paperwork activities for tech startup hires.  Filling out a W-4 and an I-9.  Benefits and direct deposit signups.  And signing a PIIA. PIIA is short for Proprietary Information and Inventions Agreement.  Some companies call them Confidential Information and Invention Assignment Agreements, or CIIAAs.  The name is usually only different because a startup’s law...