About the contributor
Matthew Hardy

I am a Senior Computer Scientist and Project Lead with Adobe Systems, working on the Adobe Acrobat and Reader products. I have worked with PDF for over 12 years, having obtained a PhD in Computer Science investigating PDF content recognition and logical structure insertion and validation. I am a Technical Expert for ISO on the PDF Reference, PDF/A, PDF/E and PDF/UA standards.
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PDF 2.0 examples now available

The PDF Association is proud to present the first PDF 2.0 example files made available to the public. Created and donated to the PDF Association by Datalogics, this initial set of PDF 2.0 examples were crafted by hand and intentionally made simple in construction to serve as teaching tools for learning PDF file structure and syntax.

PDF 2.0 interops help vendors

The PDF 2.0 interop workshops included many vendors with products for creating, editing and processing PDF files. They came together in Boston, Massachusetts for a couple of days to test their own software against 3rd party files.

PDF Days Europe underscores the importance of PDF as a key component of business processes

2017 marks a record number of attendees / Experts shared fully-grounded wisdom on PDF standards across the two-day event Berlin. With over 200 attendees, this year’s PDF Days Europe in Berlin was a significant success with the largest attendance of any …

Slides and video recordings of the PDF Days Europe 2017

About 35 informative sessions across a wide range of topics, including the next-generation PDF project. Within the video frames you can use the red “play” button to get a short impression of the talk or can enjoy the high resolution version by clicking …

PDF Days Europe 2017 hits the target!

With more than 200 participants, this year’s PDF Days Europe was the largest to-date. Early feedback from attendees makes clear that it was also a great success.

Adobe Resolves Patent Questions on ISO 32000

PDF developers know, of course, that Adobe turned PDF over to ISO in 2008 with the publication of ISO 32000-1:2008, the ISO-ized version of PDF 1.7. Even so, it has come to our attention that questions remain about the release of patents associated with PDF.

In response to these questions, I sent the following answer clarifying the situation:

I think the major issue here is old documentation referring specifically to the Adobe PDF Reference 1.7 and earlier versus the new ISO-centric documentation.  I can point anyone to the ISO patent release document at Adobe:


It is very important to understand that this document is very explicit in its granting of rights to use the components of the ISO 32000 standard, in terms of the rights granted from an authoring and a consumption standpoint.

Adobe grants every individual and organization in the world the royalty-free right, under all Essential Claims that Adobe owns, to make, have made, use, sell, import and distribute Compliant Implementations. If a licensee brings (or participates directly or indirectly in the bringing of) a lawsuit or similar action against any other party claiming that Compliant Implementation infringes an Essential Claim, Adobe may revoke the rights granted above to such licensee. Upon such revocation, such rights will be deemed to have never been granted.

Adobe is also very clear on what “Compliant Implementation” means.

“Compliant Implementation” means the portion of an application, product, or service that reads, writes modifies or processes computer files compliant with the Specification.

This is very clearly spelled out.  I realize that even when I was searching for our patent declaration on the Adobe website, I accidentally found other pages and I can see why that causes a small amount of initial confusion.  But, as soon as you find the above document, it becomes very obvious that an old document referring to the PDF reference does not apply to the ISO 32000 standard.

I hope this clearly answers the questions that have been raised.

Matthew Hardy
Adobe Systems, Senior Computer Scientist

Tags: IP, Linearization, Software Development, intellectual property
Categories: PDF