ProQuest has multiple Perpetual Access programs and a Subscpription model in which IPG and INscribe Digital enroll all titles. Participating in all models allows the libraries to purchase content the way their budgets allow. 


This is an all or nothing setup - all titles are opted in for participation to all models.


Perpetual Access

  • License to access and use a Title in perpetuity.
  • For each Perpetual Access sale, publishers are paid a percentage of the DLP, based on the applicable usage model (1-User, 3-User, Unlimited).
  1. Single User (SUPO)
    • A library purchases one copy of the digital file, which can be accessed by one user at a time.
  2. Limited Concurrent Access – 3 Users
    • A library purchases one copy of the digital file, which can be accessed by up to 3 users at a time.
  3. Multiple/Unlimited Users (MUPO)
    • A library purchases one copy of the digital file, which can be accessed by an unlimited number of users at a time.
    • Usage Model

      Percentage of DLP to IPG/INscribe

      Single User (SUPO)

      50%

      Limited Concurrent Access – 3 Users

      62%

      Multiple/Unlimited Users (MUPO)

      75%


  4. Short-Term Loan (STL)
    • License to use a Title for a year or less, for which publishers receive the STL price, based on the loan duration and the DLP, with usage model (SUPO, 3UPO, MUPO) applied.
    • Loan Period

      Percentage of DLP

      1 day

      15%

      7 days

      20%

      14 days

      25%

      28 days

      30%


    • Example: SUPO usage model (50%), STL of 28 days, DLP = $100
      • 30% of $100 = $30 ($15 to IPG)
    • Example: MUPO usage model (75%), STL of 28 days, DLP = $100
      • 30% of $100 = $30 ($22.50 to IPG)
  5. Patron-Driven, or Demand-Driven, Acquisition (PDA/DDA)
    • Allows individual users to drive the acquisition of content by corporate and institutional libraries.
    • Authorized users access Title(s) without charge, until a Trigger Event triggers a sale.
    • This type of sale is permitted under the Perpetual Access, STL, and Corporate Rental models.
    • Trigger Event:
      • An end user has viewed a Title for 10 consecutive minutes.
      • An end user has viewed 10 unique pages of a Title during a single session.
      • An end user has copied or printed 1 page (or a portion thereof) of a Title.
      • An end user has checked out a Title.
      • 3 Short-Term Loans of any duration purchased by the library.
  6. Non-Linear Lending (NLL)
    • Allows libraries to lend the purchased ebook concurrently up to 325 loans per year.
    • With each purchase of a Title, a Library is entitled to the loan instances (325 loans) for that eBook per year.
    • Loan instances are not transferable between eBooks, and they renew each year. Unused loan instances do not roll over year to year. Any part of a day is equivalent to a whole day loan.
  7. Access to Own (ATO)
    • ATO is an ebook purchase model for institutions that wish to license a Title for a designated loan period, in exchange for a fee represented by a designated percentage of the DLP. Once an institution’s accumulated ATO loans on a particular Title exceeds the DLP, the institution will then have purchased a perpetual license to the book.
    •  The triggered purchase will be a single-user license (SUPO), unless the Title is also available in other perpetual license models, such as MUPO or NLL, provided that the appropriate additional fees are paid.

      Loan Period

      Title Type

      Percentage of DLP

      Number of Loans to Trigger a Purchase

      7 days

      Frontlist

      55%

      2

      7 days

      Backlist

      35%

      3

    • Frontlist = eBooks with a pub date that is less than 365 days old
    • Backlist = eBooks with a pub date that is more than 365 days old
      • Example #1 (SUPO): Frontlist Title, DLP = $100
        • 1st ATO Transaction = $55 ($27.50 to IPG)
        • 2nd ATO Transaction = $55 ($27.50 to IPG)
        • Total Transaction = $110 – library owns the title
      • Example #2 (SUPO): Backlist Title, DLP = $100
        • 1st ATO Transaction = $35 ($17.50 to IPG)
        • 2nd ATO Transaction = $35 ($17.50 to IPG)
        • 3rd ATO Transaction = $35 ($17.50 to IPG)
        • Total Transaction = $105 – library owns the title
      • Example #3 (SUPO): Combination Title, DLP = $100
        • 1st ATO Transaction during first 12 months (frontlist) = $55 ($27.50 to IPG)
        • 2nd ATO Transaction during second 12 months (backlist) = $35 ($17.50 to IPG)
        • 3rd ATO Transaction during second 12 months (backlist) = $35 ($17.50 to IPG)
        • Total Transaction = $125 – library owns the title




Subscription Access

  • Ability to access and use a Title(s) for a limited period of time, bundled with other content in a collection assembled by ProQuest, and from which ProQuest shares revenues with contributing publishers.
  • 50% of the portion of the shared pool of revenue due to the publisher based on the titles in the collection.
  •  IPG/INscribe has a one-year embargo in place. All titles are available in the Perpetual models upon distribution, but are not available in the Subscription model until a year after publication.