Granted Patent
Utility
US 6,826,352 · App. 09/538,107
Dynamic video copy protection system
Inventor:
Ronald Quan
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Mar 29, 2000
Inventor
Ronald Quan
Assignee (at issue)
Macrovision Corporation
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.