New in this version: β’ Search results and drug listings now clarify which listed drugs are reference listed drugs (RLDs) and which are reference standards. β’ The application now uses HTTPS encryption to provide a secure connection. With FDAβs Orange Book Express app, itβs now faster and easier to find information about: β’ Drug products approved on the basis of safety and effectiveness by the Food and Drug Administration (FDA) β’ Information about patents and exclusivity Orange Book Express allows you to: β’ Search by Active Ingredient or Proprietary Name; Applicant Holder (Firm); Application Number; or Patent Number. β’ Search all marketing statuses (Rx, OTC, Discontinued) with one search. β’ Look up patent and exclusivity information. β’ Identify Reference Listed Drugs (RLDs) and determine if a drug product has a therapeutic equivalent. β’ Browse Patent Delistings and Newly Added Patents.