For the Inventor, By the Inventor

Enter assignee name

San Bruno, CA, United States of America

Ironport Systems, Inc.

Calculating rank

USPTO Granted Patents = 21

% Expired Patents = 57.1

Trademarks = 1

Forward Citations = 2,015

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31 inventors (with patents filed for the assignee):

Daniel A Quinlan (9 out of 12 patents)

Paul J Clegg (7 out of 7 patents)

Craig Sprosts (7 out of 7 patents)

4. Eric Bloch (6 out of 6 patents)

5. Scot Free Kennedy (5 out of 11 patents)

6. Peter Schlampp (4 out of 4 patents)

7. Patrick Richard Peterson (3 out of 11 patents)

8. Shalabh Mohan (3 out of 3 patents)

9. Rajendraprasad R Pagaku (3 out of 3 patents)

10. Doug Moore (3 out of 3 patents)

11. Mark Krentel (3 out of 3 patents)

12. Bruce Thompson (3 out of 3 patents)

13. Julian R Elischer (3 out of 3 patents)

14. Brandon L Golm (3 out of 3 patents)

15. Robert Van Zant (3 out of 3 patents)

21 patents: Sort by Forward Citations

1. 8166310 - Method and apparatus for providing temporary access to a network device (2012-04-24),

2. 8087082 - Apparatus for filtering server responses (2011-12-27),

3. 8069213 - Method of controlling access to network resources using information in electronic mail messages (2011-11-29),

4. 7917588 - Managing delivery of electronic messages using bounce profiles (2011-03-29),

5. 7877493 - Method of validating requests for sender reputation information (2011-01-25),

6. 7873695 - Managing connections and messages at a server by associating different actions for both different senders and different recipients (2011-01-18),

7. 7870200 - Monitoring the flow of messages received at a server (2011-01-11),

8. 7854007 - Identifying threats in electronic messages (2010-12-14),

9. 7849507 - Apparatus for filtering server responses (2010-12-07),

10. 7849502 - Apparatus for monitoring network traffic (2010-12-07),

11. 7849142 - Managing connections, messages, and directory harvest attacks at a server (2010-12-07),

12. 7836133 - Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources (2010-11-16),

13. 7809796 - Method of controlling access to network resources using information in electronic mail messages (2010-10-05),

14. 7756930 - Techniques for determining the reputation of a message sender (2010-07-13),

15. 7748038 - Method and apparatus for managing computer virus outbreaks (2010-06-29),

Company Overview

IronPort Systems, Inc., based in San Bruno, California, specializes in advanced email and web security solutions. The company focuses on developing technologies that protect organizations from various cyber threats, including spam, malware, and phishing attacks. IronPort's innovative products are designed to enhance the security posture of enterprises by providing robust filtering and threat detection capabilities. As part of Cisco, IronPort continues to evolve its offerings to address the dynamic landscape of cybersecurity challenges.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

21 Patents

#5 in San Bruno, CA

#3,775 in California

#15,748 in US

#30,080 in the World

San Bruno, CA, United States of America

Ironport Systems, Inc.

Forward Citations = 2,015

31 inventors:

Daniel A Quinlan (9 out of 12 patents)

Paul J Clegg (7 out of 7 patents)

Craig Sprosts (7 out of 7 patents)

4. Eric Bloch (6 out of 6 patents)

5. Scot Free Kennedy (5 out of 11 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ironport Systems, Inc.. Retrieved from https://idiyas.com/company/ironport-systems

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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