The trial court abused its discretion in dismissing this action as a sanction under CCP 128.7 on the ground that there was no reasonable ground for thinking it was not barred by the statute of limitations. The action sought to quiet title to the property that the plaintiff had purchased in 2008 with knowledge of prior agreements purportedly assigning “coverage rights” in the property to others. The opinion holds that plaintiff had a reasonable argument that the statute of limitations did not begin to run on his quiet title claim at the time of purchase because the seller gave him an unrestricted grant deed and he entered into possession of the property. The limitations period does not run against a quiet title claim by the person in undisturbed possession of the real property. The limitations period did not accrue later when the parties disputed the “coverage rights” before the Tahoe Regional Planning Agency because it had no authority to resolve their dispute and defendant took no step force the issue. Because there was a reasonable factual and legal basis for plaintiff’s claim, it was an abuse of discretion to award sanctions against plaintiff for filing the suit.