The defences set up to the complainant's bill for an infringement are, that the patent is void for want of novelty in the invention, and for want of utility, and also that it has not been infringed by the defendant.
To determine how far these defences are sustained it is important to have a clear apprehension of the state of the art when the patent was granted...
Let's get started

Welcome to the leading source of independent legal reporting
Sign on now to see your case.
Or view more than 10 million decisions and orders.
- Updated daily.
- Uncompromising quality.
- Complete, Accurate, Current.