How Web Browsers Run Embedded Programs Inside Documents
A 1994 invention that allowed web browsers to automatically launch and run external programs directly inside a webpage, enabling interactive content like 3D models or complex data viewers.
Original patent title: “Distributed hypermedia method for automatically invoking external application providing interaction and display of embedded objects within a hypermedia document”
A 1994 invention that allowed web browsers to automatically launch and run external programs directly inside a webpage, enabling interactive content like 3D models or complex data viewers. Granted to University of California San Diego UCSD in 1998 with 12 claims and 576 forward citations, and it is now in the public domain.
Coverage
What does this patent actually cover?
This patent describes a method for a web browser to identify a specific tag in a document that points to an external object. When the browser encounters this 'embed' tag, it automatically launches an external application to handle that object. The browser then creates a display area within the webpage where that application can run. Crucially, the patent allows for ongoing communication between the browser and the launched application, meaning the user can interact with the embedded content (like rotating a 3D model) while the browser manages the window.
The gap
What does this patent NOT cover?
- Does not cover static images or text that are simply displayed by the browser without an external executable application.
- Does not cover server-side rendering where the browser only receives a flat image file rather than running an interactive application.
- Does not cover browser plugins that require manual user installation or activation before the document is parsed.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
Key facts
What made this novel
The innovation was moving beyond the browser as a simple document viewer to a 'container' that could delegate rendering and interaction to external, specialized programs while keeping them visually integrated in the page.
The Patent Drawing
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
Early web browser plugins like Adobe Flash
Java Applets in browsers
Embedded 3D model viewers in web pages
Interactive scientific data visualization tools
Why it matters
The bigger picture
This patent was central to the early evolution of the web from a collection of static text pages into an interactive application platform. It provided the technical foundation for what would become browser plugins, applets, and eventually the rich, dynamic web experiences we use today. Its broad scope led to significant licensing disputes in the late 1990s and 2000s, as it essentially claimed the fundamental way browsers handle non-textual, interactive content.
Filed
October 17, 1994
Granted
November 17, 1998
Market context
Who's building on this
Companies in this space
The technology described here is now foundational to all modern web browsers. Companies like Google, Mozilla, and Apple have built upon these concepts to create the modern DOM (Document Object Model) and sandboxed execution environments that power web applications today.
Market impact
This patent triggered high-profile litigationlitigationA lawsuit over patent infringement. Litigated patents often signal commercial importance.Read more → in the early 2000s, notably against major browser vendors, because it claimed a fundamental mechanism of the web. It forced the industry to carefully navigate how browsers handle external content and influenced the development of open standards for web integration to avoid infringementinfringementMaking, using, selling, or importing a patented invention without permission from the patent holder.Read more →.
Claim 1 — Plain English
What this patent covers
This patent describes a method for a web browser to identify a specific tag in a document that points to an external object. When the browser encounters this 'embed' tag, it automatically launches an external application to handle that object. The browser then creates a display area within the webpage where that application can run. Crucially, the patent allows for ongoing communication between the browser and the launched application, meaning the user can interact with the embedded content (like rotating a 3D model) while the browser manages the window.
The clever bit
The innovation was moving beyond the browser as a simple document viewer to a 'container' that could delegate rendering and interaction to external, specialized programs while keeping them visually integrated in the page.
What it does not cover
- Does not cover static images or text that are simply displayed by the browser without an external executable application.
- Does not cover server-side rendering where the browser only receives a flat image file rather than running an interactive application.
- Does not cover browser plugins that require manual user installation or activation before the document is parsed.
Patent timeline
Application submitted to the patent office
Application published, typically 18 months after filing
Patent officially issued
Patent enters public domain
This patent is in the public domain
See the Freedom to Build guide — what is free to use, what is not, and how to cite this patent.
PatentBrief Score
Impact Score
Strong
Citation count
40/40
Highly cited
Claim breadth
8/20
Moderate scope
Recency
0/20
Older than 20 years
Assignee scale
20/20
Major company or institution
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$72K – $230K
Midpoint $144K · expired or expiring · industry ×1.6
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
Claim text not yet imported for this patent
The original legal language
Original claims
12 claims as filed with the patent office.
Concepts involved
Citations
Patent lineage
Cite this patent
Martin, D. C., Ang, C. S., & Doyle, M. D. (1998). How Web Browsers Run Embedded Programs Inside Documents (U.S. Patent No. 5,838,906). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/5838906/microsoft-internet-browser
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
Frequently Asked Questions
What does How Web Browsers Run Embedded Programs Inside Documents cover?
A 1994 invention that allowed web browsers to automatically launch and run external programs directly inside a webpage, enabling interactive content like 3D models or complex data viewers.
Who owns patent US 5838906?
University of California San Diego UCSD owns this patent, granted in 1998.
When does this patent expire?
This patent has expired and is now in the public domain — anyone can use the invention freely.
What is patent US 5838906 cited by?
This patent has been cited by 576 later patents that build on its ideas.
What problem does this patent solve?
This patent was central to the early evolution of the web from a collection of static text pages into an interactive application platform. It provided the technical foundation for what would become browser plugins, applets, and eventually the rich, dynamic web experiences we use today. Its broad scope led to significant licensing disputes in the late 1990s and 2000s, as it essentially claimed the fundamental way browsers handle non-textual, interactive content.
What does this patent NOT cover?
Does not cover static images or text that are simply displayed by the browser without an external executable application.
Same assignee
More from University of California San Diego UCSD
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