1. Polish Fathers want a rebuttable presumption for shared parenting in Polish law. 2. Violation of the statute generally raises a rebuttable presumption of negligence. 3. The Court thereby adopted a rebuttable presumption of reliance, based on the fraud-on-the-market theory. 4. However, many modern cases have found merger clauses to be only a rebuttable presumption . 5. The rebuttable presumption of gift affects transfers between siblings, uncles, aunts, children, and grandchildren. 6. In some cases, however, a rebuttable presumption can also work in favor of the accused. 7. There is a rebuttable presumption of unencumbered ownership. 8. In legal terms this is referred to as a rebuttable presumption of equal shared parenting time. 9. The effect of the order is to create a rebuttable presumption that the specified person is dead. 10. Congress, in the legislative history, intended to create a rebuttable presumption of reasonableness, or " safe harbor ."