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Re: Patents on XrML (DRM for Atom)

To: Atom-Syntax <atom-syntax@xxxxxxx>
Subject: Re: Patents on XrML (DRM for Atom)
From: Tim Bray <Tim.Bray@xxxxxxx>
Date: Thu, 03 Jun 2004 10:00:12 -0700
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On Jun 3, 2004, at 9:02 AM, Asbjørn Ulsberg wrote:

I queried ContentGuard about their patents on DRM technology, and as it seems, no patents are directly linked to XrML. As Rajan writes: «In fact, a DRM product or system may infringe our patents without using a rights expression language».

My information is that the whole space of XML expression of digital rights is a rat's-nest of patents. Also check out REL and XACML, which have some patent-avoidance in their design. But it's scary territory. -Tim

Follow-Ups:
- Re: Patents on XrML (DRM for Atom)
  - From: Asbjørn Ulsberg
- Re: Patents on XrML (DRM for Atom)
  - From: Robin Cover

References:
- Patents on XrML (DRM for Atom)
  - From: Asbjørn Ulsberg

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