IP Library › Granted Patent US 5,870,543
Granted Patent Utility
US 5,870,543 · App. 08/814,832

System for preventing unauthorized copying of active software

Inventor: Joel A. Ronning
Patented Case View Patent ↗
Granted: Feb 9, 1999 Filed: Mar 11, 1997
Inventor
Joel A. Ronning
Assignee (at issue)
DIGITAL RIVER, INC.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,870,543
App. No.
08/814,832
Filed
1997-03-11
Granted
1999-02-09
Kind
A