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For the Inventor, By the Inventor

Santa Clara, CA, United States of America

Macrovision Corporation


USPTO Granted Patents = 135

% Expired Patents = 9.6



Forward Citations = 3,583

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67 inventors (with patents filed for the assignee):

goldMedal Ronald Quan (50 out of 122 patents)

silverMedal John O Ryan (42 out of 76 patents)

bronzeMedal James R Holzgrafe (11 out of 17 patents)

4.  Peter J Wonfor (10 out of 15 patents)

5.  Mark A Hollar (7 out of 9 patents)

6.  François-Xavier Nuttall (7 out of 8 patents)

7.  Daniel Putterman (6 out of 34 patents)

8.  Brad Dietrich (6 out of 27 patents)

9.  Pedro Freitas (6 out of 9 patents)

10.  Jeremy Toeman (5 out of 9 patents)

11.  Gregory C Copeland (5 out of 12 patents)

12.  Richard A A Heylen (5 out of 11 patents)

13.  Kordian Jacek Kurowski (5 out of 7 patents)

14.  William J Wrobleski (5 out of 5 patents)

15.  Paul Novaes (4 out of 7 patents)


Core Competencies:
Copy Protection
Digital Content Delivery
Optical Discs
Video Signal Encryption
Watermarking Techniques
Networked Media Systems
Secure Distribution
Digital Audio
High Definition Scrambling
Content Authentication
File Sharing Security
Anti-Piracy Measures

135 patents:

1. 8254756 - Method and apparatus for reducing and restoring the effectiveness of a commercial skip system (2012-08-28),
2. 7877457 - Peer to peer gateway (2011-01-25),
3. 7721338 - Defeat of the copy protection of optical discs (2010-05-18),
4. 7716744 - Apparatus and method for monitoring and controlling access to data on a computer readable medium (2010-05-11),
5. 7716138 - Method for discouraging the distribution of illegal copies of computer programs over file sharing networks (2010-05-11),
6. 7715934 - Identification of input files using reference files associated with nodes of a sparse binary tree (2010-05-11),
7. 7706661 - Copy protection of optical discs using redundant control data (2010-04-27),
8. 7706533 - Copy protection for video signal using narrowed horizontal synchronization signals (2010-04-27),
9. 7702591 - System and methods providing secure delivery of licenses and content (2010-04-20),
10. 7701825 - Apparatus for and a method of authenticating recording media (2010-04-20),
11. 7685641 - Copy-protected digital audio compact disc, and method and system for producing same (2010-03-23),
12. 7664369 - Method and apparatus for improving the playability of a PAL or NTSC video signal containing color burst modifications (2010-02-16),
13. 7650504 - System and method of verifying the authenticity of dynamically connectable executable images (2010-01-19),
14. 7650418 - System and method for controlling the usage of digital objects (2010-01-19),
15. 7624282 - Method and apparatus for DVD copy protection with selective data pattern insertion (2009-11-24),
Macrovision Corporation is a leading technology company that provides digital rights management and copy protection solutions. With an extensive portfolio of products and services, Macrovision helps businesses protect their intellectual property and ensure secure distribution of content. Their innovative solutions cater to various industries such as entertainment, software, and electronic devices. Visit their website to learn more about how Macrovision can safeguard your digital assets.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 22 2026

135 Patents

#35 in Santa Clara, CA

#642 in California

#2,874 in US

#5,970 in the World

Santa Clara, CA (US)
Santa Clara, CA, United States of America

Macrovision Corporation

Forward Citations = 3,583

67 inventors:

goldMedal Ronald Quan (50 out of 122 patents)

silverMedal John O Ryan (42 out of 76 patents)

bronzeMedal James R Holzgrafe (11 out of 17 patents)

4.  Peter J Wonfor (10 out of 15 patents)

5.  Mark A Hollar (7 out of 9 patents)

Please report any incorrect information to [email protected]
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