This post was first published on July 18, 2014. After studying citations from patents that were invalidated by US Judges, researchers from the London...
Read more about Patent Invalidation in the US: The Good, the Bad and the UglyTag: Patent Invalidation
Rosaire v. Baroid Sales, 218 F.2d 72 (1955)
Rosaire v. Baroid Sales examines whether prior public experiments can invalidate a patent under Section 102(a). The judgment clarifies that successful, public use of a method by others before the patent application constitutes prior knowledge, resulting in patent invalidation.
Read more about Rosaire v. Baroid Sales, 218 F.2d 72 (1955)True Position Inc.’s Device Locator Patent Invalidated
The USPTO’s PTAB has invalidated True Position Inc.’s device locator patent 7,783,299 on grounds of anticipation and obviousness based on prior art. Polaris Wireless successfully challenged the patent’s validity, highlighting the significance of robust prior art analysis in US patent law.
Read more about True Position Inc.’s Device Locator Patent Invalidated