If you invent and do not keep it a secret, then that person five years later (under both the old and new law) would be out of luck as your invention would be prior art.
Patent number: 6080436 Filing date: Jun 14, 1999 Issue date: Jun 27, 2000
What is claimed is: 1. A method of refreshing bread products, comprising:
a) placing a bread product in an oven having at least one heating element, b) setting the temperature of the heating elements between 2500 F. and 4500 F., and c) ceasing exposure of the bread product to the at least one heating element after a period of 3 sec. to 90 sec. 2. The method of claim 1 including the step of exposing the bread product to electromagnetic radiation in the wavelength range between 1.2 and 3.4 microns.
3. The method of claim 1 including the step of selecting said bread products from rolls, muffin, buns and bagels.
Also, so long as you can prove prior art, the patent is worthless.
Third parties can also file ex parte or inter partes reexamination request, through which the third party can ask the USPTO to reexamine the patent to verify the patentability of the claimed subject matter. The fee for requesting an ex parte proceeding is $2520, and after filing the request, the third party no longer actively participates in the proceedings. Third parties filing an inter partes request, after paying the $8800 fee, may continue to participate in the proceedings.
How likely are they to succeed in invalidating an issued patent?
If done poorly, couldn't they have the potential to actually reinforce a lousy patent?
Is this "cheap" course of action actually available if you're already being sued over some bogus patent you didn't know existed (or didn't choose to pay for the reexamination) in advance?