Beware the “on-sale bar”
A patent is invalid if the invention was sold more than a year before filing (on-sale bar), and the recent “Helsinn v … Read more
Stephen E. Zweig, PhD JD, Patent Attorney
A patent is invalid if the invention was sold more than a year before filing (on-sale bar), and the recent “Helsinn v … Read more
The US is now on the AIA first (inventor) to file system. Inventors must now “race to the patent office”. Consider filing multiple provisional patents.