Prove that exhalation limb of the manufacturer's ventilation patient circuit was permeable to water and certain exhaled gases.
Xinetix testing proved that the exhalation limb was in fact able to pass carbon dioxide and water through the polymer membrane and therefore did not infringe on the competitor's patent.
Testing required use of a complex setup to simulate as used conditions for the product when in the hospital. A gas capture canister was designed to surround the exhalation limb and trap gases passing through the membrane. Captured gases were then characterized and quantified by a gas mass spectrometer.
"I am sure the number of people available who have logged the number of hours you have with a mass spec is pretty small." Attorney for the client