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For the Inventor, By the Inventor

Plano, TX, United States of America

Contentguard Holdings, Inc.


USPTO Granted Patents = 130



Forward Citations = 2,747

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47 inventors (with patents filed for the assignee):

goldMedal Mark Jeffrey Stefik (50 out of 141 patents)

silverMedal Xin Wang (47 out of 58 patents)

bronzeMedal Peter L T Pirolli (44 out of 78 patents)

4.  Thanh Ta (41 out of 42 patents)

5.  Michael Charles Raley (39 out of 41 patents)

6.  Guillermo Lao (38 out of 46 patents)

7.  Bijan Tadayon (27 out of 43 patents)

8.  Eddie J Chen (21 out of 22 patents)

9.  Aram Nahidipour (17 out of 22 patents)

10.  Charles P Gilliam (16 out of 17 patents)

11.  Daniel C Chen (15 out of 16 patents)

12.  Hsi-Cheng Wu (12 out of 13 patents)

13.  Thomas DeMartini (10 out of 12 patents)

14.  Edgardo Valenzuela (8 out of 9 patents)

15.  Mai Nguyen (8 out of 9 patents)


Core Competencies:
Digital Rights Management
Content Licensing
Watermarking Techniques
Usage Rights Management
Rights Expression Processing
Content Distribution Control
Software Access Regulation
Subscription Management
Content Protection Mechanisms
Dynamic Content Security
User Interface Management
Digital Work Structure

130 patents:

1. 10540484 - Networked services licensing system and method (2020-01-21),
2. 10430729 - System and method for specifying and processing legality expressions (2019-10-01),
3. 9953328 - Method and system for conducting transactions between repositories (2018-04-24),
4. 9817954 - Multi-mode protected content wrapper (2017-11-14),
5. 9734506 - System and method for controlling utilization of content (2017-08-15),
6. 9727876 - System and method for permitting use of content using transfer rights (2017-08-08),
7. 9589111 - System for controlling the distribution and use of rendered digital works through watermarking (2017-03-07),
8. 9336366 - Method and apparatus for identifying installed software and regulating access to content (2016-05-10),
9. 8914906 - Method and apparatus for identifying installed software and regulating access to content (2014-12-16),
10. 8904545 - Method, system, and device for verifying authorized issuance of a rights expression (2014-12-02),
11. 8892473 - Method and system for subscription digital rights management (2014-11-18),
12. 8869293 - Method and apparatus for hierarchical assignment of rights to documents and documents having such rights (2014-10-21),
13. 8862517 - Digital rights management of content when content is a future live event (2014-10-14),
14. 8832852 - Method and apparatus for dynamic protection of static and dynamic content (2014-09-09),
15. 8768850 - Method, system, and device for license-centric content consumption (2014-07-01),
CONTENTGUARD HOLDINGS, INC. is a leading digital rights management (DRM) and content protection company. They provide innovative solutions and services that enable businesses to securely distribute, manage, and monetize their digital content across various platforms. With a strong focus on intellectual property protection, CONTENTGUARD helps organizations safeguard their valuable assets and prevent unauthorized access, copying, or distribution. Their advanced DRM technologies and solutions are trusted by a wide range of industries including publishing, entertainment, software, and more.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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130 Patents

#15 in Plano, TX

#159 in Texas

#2,854 in US

#5,997 in the World

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Plano, TX, United States of America

Contentguard Holdings, Inc.

Forward Citations = 2,747

47 inventors:

goldMedal Mark Jeffrey Stefik (50 out of 141 patents)

silverMedal Xin Wang (47 out of 58 patents)

bronzeMedal Peter L T Pirolli (44 out of 78 patents)

4.  Thanh Ta (41 out of 42 patents)

5.  Michael Charles Raley (39 out of 41 patents)

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