Lifescan, Inc. v. Roche Diagnostics Corp. (PDF) Decided Sept. 11, 2007 Judge Illstone Judge Illstone construes four disputed claim terms in this claim construction opinion. The patents involve technology that is used by people with diabetes to monitor their blood glucose levels. Of particular interest is the court’s focus on amendments made during prosecution to overcome prior art cited by the Examiner in determining the meaning of a disputed term in the claims.