Awarded Patents

Online patent search page

• (9) Method and System for Facilitating Relocation of Devices on a Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,889) December 10, 1999.
  US Patent 6,977,929 issued December 21, 2005.
• (8) System and Method for Separating Addresses from the Delivery Scheme in a Virtual Private Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,043) December 10, 1999.
  US Patent 6,970,941 issued November 29, 2005.
• (7) Method and Apparatus for Using Client Puzzles to Protect Against Denial-of-Service Attacks.
  Christoph L. Schuba and Erik Guttman.
  Patent application filed in the United States, (10/091,826) March 6, 2002.
  US Patent 6,944,663 issued September 13, 2005.
• (6) Channel-Specific File System Views in a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Tom R. Markson, Sandeep Kumar, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,895) December 10, 1999.
  US Patent 6,938,169 issued August 30, 2005.
• (5) Using multicast to provide ethernet-like communication behavior to selected peers on a network.
  Germano Caronni, Amit Gupta, Tom R. Markson, Sandeep Kumar, Christoph L. Schuba, and Glenn C. Scott.
  Patent application 09/457,915 filed in the United States, December 10, 1999.
  US Patent 6,870,842 issued March 22, 2005.
• (4) Truly anonymous communications using supernets, with the provision of topology hiding.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application 09/457,917 filed in the United States, December 10, 1999.
  US Patent 6,798,782 issued September 28, 2004.
• (3) Network protection for denial of service attacks.
  Christoph L. Schuba, Ivan V. Krsul, Diego Zamboni, Eugene H. Spafford, Aurobindo M. Sundaram, and Markus G. Kuhn.
  Patent application 09/293,479 filed in the United States, April 15, 1999.
  US Patent 6,725,378 issued April 20, 2004.
• (2) Method and apparatus for determining approximate network distances using reference locations.
  Christoph Schuba, Raphael Rom, Israel Cidon, and Amit Gupta.
  Patent application 09/432,506 filed in the United States, November 2, 1999.
  US Patent 6,724,733 issued April 20, 2004.
• (1) Method and apparatus for encoding content characteristics.
  Amit Gupta, Elliot Poger, and Christoph L. Schuba.
  Patent application 09/146,381 filed in the United States, September 1, 1998.
  US Patent 6,519,646 issued February 11, 2003.

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Pending and Issued Patent Applications

• (32 - SUN060950 - Filed)
  Method and Apparatus for Monitoring A Data Stream To Detect A Pattern Of Data Element
  Hal L. Stern and Christoph L. Schuba.
  Patent application filed in the United States, (N/A) September 19, 2006.
• (31 - SUN060949 - Filed)
  Method and Apparatus for Monitoring A Data Stream
  Christoph L. Schuba and Hal L. Stern.
  Patent application filed in the United States, (N/A) September 19, 2006.
• (30 - SUN050737 - Filed)
  Computer Security Technique Employing Patch With Detection And/Or Characterization Mechanism For Exploit Of Patched Vulnerability
  Christoph L. Schuba, Dwight F. Hare, and Gabriel Montenegro.
  Patent application filed in the United States, (N/A) August 19, 2005.
• (29 - SUN050730 - Filed)
  Defining Self of Unix Processes using DTracing
  Christoph L. Schuba, and Dwight F. Hare, and Hal Stern.
  Patent application filed in the United States, (N/A) November 8, 2005.
• (28 - SUN050047 - Filed)
  Discovering Services Supported by Flow Enforcement Devices Through Subgraph Matching
  Christoph L. Schuba, Mohammed M. Hefeeda, Jason L. Goldschmidt, and Michael F. Speer
  Patent application filed in the United States, (N/A) May 20, 2005.
• (27 - SUN050092 - Filed)
  Method and Apparatus for Fast Scalable Matching of Structured Data Stream s.
  Christoph L. Schuba, Sumantra R. Kundu, and Jason L. Goldschmidt,
  Patent application filed in the United States, (N/A) January 21, 2005.
• (26 - SUN041060 - Filed)
  Distributed Flow Enforcement.
  Jason L. Goldschmidt, Christoph L. Schuba, Michael F. Speer, and Benjamin Stoltz.
  Patent application filed in the United States, (N/A) June 25, 2004.
• (25 - SUN041055 - Filed)
  Rule set verification.
  Jason L. Goldschmidt, Christoph L. Schuba, and Michael F. Speer
  Patent application filed in the United States, (N/A) June 15, 2004.
• (24 - SUN041003 - Filed)
  Rule Set Conflict Resolution.
  Jason L. Goldschmidt and Christoph L. Schuba.
  Patent application filed in the United States, (N/A) June 15, 2004.
• (23 - SUN03-0216 - Filed)
  Resolving Conflicts Between Network Service Rule Sets For Network Data Traffic In A System Where Rule Patterns With Longer Prefixes Match Before Rule Patterns With Shorter Prefixes
  Christoph L. Schuba, Jason L. Goldschmidt, and Michael F. Speer
  Patent application filed in the United States, (10/800,091) March 12, 2004.
• (22 - P9012 - Filed)
  Method and Apparatus for Computing Priorities Between Conflicting Rules for Network Services.
  Christoph L. Schuba, Santashil PalChaudhuri, Raphael Rom, and Michael F. Speer.
  Patent application filed in the United States, (10/379,031) March 3, 2003.
• (21 - P9018 - Filed)
  Method and Apparatus for Managing Packet Flows for Multiple Network Services.
  Robert D. Bressler, Christoph L. Schuba, and Michael F. Speer.
  Patent application filed in the United States, (10/329,016) December 12, 2002.
• (20 - P7242 - Issued - 7)
  Method and Apparatus for Using Client Puzzles to Protect Against Denial-of-Service Attacks.
  Christoph L. Schuba and Erik Guttman.
  Patent application filed in the United States, (10/091,826) March 6, 2002. US Patent 6,944,663 issued September 13, 2005.
• (19 - P3680 - Filed)
  A Method and Apparatus for Watermarking Digital Content.
  Germano Caronni and Christoph L. Schuba.
  Abandoned 06/2002. Patent application filed in the United States, (09/461,259) December 15, 1999. Abandoned June 2002.
• (18 - P4303 - Issued - 8)
  System and Method for Separating Addresses from the Delivery Scheme in a Virtual Private Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,043) December 10, 1999.
  US Patent 6,970,941 issued November 29, 2005.
• (17 - P4304 - Issued - 4)
  Truly Anonymous Communications Using Supernets with the Provision of Topology Hiding.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,917) December 10, 1999.
  US Patent 6,798,782 issued September 28, 2004.
• (16 - P4306 - Issued - 9 )
  Method and System for Facilitating Relocation of Devices on a Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,889) December 10, 1999.
  US Patent 6,977,929 issued December 21, 2005.
• (15 - P4307 - Filed)
  Sandboxing Applications in a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,916) December 10, 1999.
• (14 - P4308 - Filed)
  Secure Address Resolution for a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,894) December 10, 1999.
• (13 - P4309 - Filed)
  Decoupling Access Control from Key Management in a Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,020) December 10, 1999.
• (12 - P4310 - Issued - 6)
  Channel-Specific File System Views in a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,895) December 10, 1999.
  US Patent 6,938,169 issued August 30, 2005.
• (11 - P4311 - Filed)
  Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,040) December 10, 1999.
• (10 - P4312 - Filed)
  System and Method for Enabling Scalable Security in a Virtual Private Network.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,914) December 10, 1999.
• (9 - P4313 - Issued - 5)
  Using Multicast to Provide Ethernet-Like Communication Behavior to Selected Peers on a Network.
  Germano Caronni, Amit Gupta, Tom R. Markson, Sandeep Kumar, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,915) December 10, 1999.
  US Patent 6,870,842 issued March 22, 2005.
• (8 - P4314 - Filed)
  Anycasting in a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/457,896) December 10, 1999.
• (7 - 4315 - Filed)
  Scalable Security Associations for Groups for Use in a Private Network Using a Public Network Infrastructure.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,021) December 10, 1999.
• (6 - P4302 - Abandoned)
  Enabling Simultaneous Provision of Infrastructure Services.
  Germano Caronni, Amit Gupta, Sandeep Kumar, Tom R. Markson, Christoph L. Schuba, and Glenn C. Scott.
  Patent application filed in the United States, (09/458,044) December 10, 1999. Abandoned.
• (5 - P3495 - Issued - 2)
  Method and Apparatus for Determining Approximate Network Distances Using Reference Locations.
  Israel Cidon, Amit Gupta, Raphael Rom, and Christoph L. Schuba.
  Patent application filed in the United States, (09/432,506) November 2, 1999.
  US Patent 6,724,733 issued April 20, 2004.
• (4 - P3312 - Filed)
  Method and Apparatus for Transparently Processing DNS Traffic.
  Amit Gupta, Christoph L. Schuba, and Geoffrey Baehr.
  Patent application filed in the United States, (09/150,630) September 9, 1998.
• (3 - P3313 - Issued - 1)
  Method and Apparatus for Encoding Content Characteristics.
  Amit Gupta, Elliot Poger, and Christoph L. Schuba.
  Patent application filed in the United States, (09/146,381) September 1, 1998.
  US Patent 6,519,646 issued February 11, 2003.
• (2 - P3220 - Filed)
  Method and Apparatus for Effective Traffic Localization through Domain Name System.
  Amit Gupta, Geoffrey Baehr, Raphael Rom, and Christoph L. Schuba.
  Patent application filed in the United States, (09/081,860) May 19, 1998.
• (1 - Work at Purdue - Issued - 3)
  SYNKILL: Analysis of a Denial of Service Attack on TCP.
  Christoph L. Schuba, Ivan V. Krsul, Diego Zamboni, Eugene H. Spafford, Markus G. Kuhn, and Aurobindo M. Sundaram.
  Patent application filed in the United States, (09/293,479) April 15, 1999.
  US Patent 6,725,378 issued April 20, 2004.

• Various other patent filings are in preparation.

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Christoph L. Schuba