PE-backed ProQuest acquires SIPX

ProQuest, which is backed by ABRY Partners and Goldman Sachs, has bought SIPX. No financial terms were disclosed. Based in Palo Alto, California, SIPX is a provider of digital course materials that addresses copyright and costs concerns for universities. SIPX's backers included Mohr Davidow Ventures, XSeed Capital, Stanford University and Ulu Ventures.

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