damages and other matters. Often these issues are subject to substantial uncertainties and, therefore, the probability of loss and an estimation of damages are difficult to ascertain. Consequently, we cannot reasonably estimate the maximum potential exposure or the range of possible loss in excess of amounts accrued for these contingencies. These assessments can involve a series of complex judgments about future events and can rely heavily on estimates and assumptions (see Notes to Consolidated Financial Statements—Note 1B. Significant Accounting Policies: Estimates

and Assumptions). Our assessments are based on estimates and assumptions that have been deemed reasonable by management. Litigation is inherently unpredictable, and excessive verdicts do occur. Although we believe we have substantial defenses in these matters, we could in the future incur judgments or enter into settlements of claims that could have a material adverse effect on our results of operations in any particular period.

Patent claims include challenges to the coverage and/or validity of our patents on various products or processes. Although we believe we have substantial defenses to these challenges with respect to all our material patents, there can be no assurance as to the outcome of these matters, and a loss in any of these cases could result in a loss of patent protection for the drug at issue, which could lead to a significant loss of sales of that drug and could materially affect future results of operations.