Three nonprofit neighborhood organizations have standing to sue the Cook County Assessor’s Office over an alleged unconstitutional property tax system, a Cook County judge ruled.The Brighton Park Neighborhood Council, the Logan Square Neighborhood Association and the South Suburban Housing Center filed a civil rights lawsuit against former Cook County assessor Joseph Berrios and Cook County in March.Berrios and Cook County filed a motion to dismiss, arguing that the nonprofits lacked standing as organizations to sue …