definiens: means:(a ) any Patent Right in any form that is Controlled by PTI or any of its Affiliates as of the Effective Date andthat Covers a Compound, Lead Compound, Development Compound, Backup Compound, or Licensed Product(including the composition of matter thereof ), a method of making any Compound, Lead Compound, DevelopmentCompound, Backup Compound, or Licensed Product, a method of using any Compound, Lead Compound, Development Compound, Backup Compound, or Licensed Product, or a method or assay for screening for acompound that modulates the Target, or is otherwise necessary or useful to conduct the Research Program or toDevelop or Commercialize any Lead Compound, Development Compound, Backup Compound, or Licensed Product();(b ) any Patent Right in any form that is Controlled solely by PTI or any of its Affiliates that Covers anyInvention included in the PTI Collaboration Know - How ( ) ; and(c ) PTI ’s interest in Joint Collaboration Patent Rights