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Exfo Inc.

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USPTO Granted Patents = 144

% Expired Patents = 6.3

CIPO Patents = 1

EPO Patents = 40

Trademarks = 2

Forward Citations = 850

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102 inventors (with patents filed for the assignee):

Stephane Perron (21 out of 21 patents)

Michel Leclerc (19 out of 19 patents)

Gang He (18 out of 26 patents)

4. Bernard Ruchet (18 out of 19 patents)

5. Mario L'Heureux (15 out of 15 patents)

6. Daniel Gariepy (14 out of 15 patents)

7. Olivier Patry (11 out of 29 patents)

8. Normand Cyr (10 out of 11 patents)

9. Stéphane Perron (10 out of 10 patents)

10. Robert Baribault (9 out of 14 patents)

11. Michel Leblanc (8 out of 10 patents)

12. Hongxin Chen (8 out of 9 patents)

13. Sylvain Nadeau (7 out of 9 patents)

14. Michael Simard (6 out of 6 patents)

15. Mathias Westlund (5 out of 13 patents)

Core Competencies:

Optical Fiber

Inspection Systems

RF Spectrum

Testing Instruments

Quality Control

OTDR Measurement

Network Performance

Fronthaul Monitoring

Power Measurement

Connector Endfaces

Multi-Fiber Cables

Augmented Reality

144 patents: Sort by Forward Citations

1. 12791431 - Referencing optical power loss measurements using reflectometric measurements (2026-11-10),

2. D1146995 - Display screen or portion thereof with graphical user interface (2026-09-08),

3. 12730238 - Method and apparatus of distributed acoustic sensing (2026-09-08),

4. 12723945 - Visual fault locator (VFL) with variable gain control (2026-09-01),

5. 12716810 - Adjusting the power level of a visible light source based on a characterization of an optical fiber under test (2026-08-25),

6. D1142479 - DISPLAY SCREEN OR PORTION THEREOF WITH GRAPHICAL USER INTERFACE (2026-08-18),

7. 12704435 - Optical test device and connector adapter (2026-08-11),

8. 12687459 - Method and apparatus of single-ended polarization mode dispersion measurement (2026-07-21),

9. 12669626 - Method and apparatus of distributed acoustic sensing (2026-06-30),

10. 12663308 - Method and apparatus of distributed acoustic sensing (2026-06-23),

11. 12520253 - RF spectrum analyzer for TDD transmission that maintains synchronization between UL and DL with a single antenna (2026-01-06),

12. 12442719 - Duplex optical power loss measurement using an adaptor device (2025-10-14),

13. 12429653 - Adapter tip and microscope system for inspecting duplex fiber-optic connector endfaces (2025-09-30),

14. D1079512 - Portable test instrument (2025-06-17),

15. D1078515 - Portable test instrument (2025-06-10),

Company Overview

Exfo Inc., headquartered in Quebec, Canada, specializes in optical fiber testing solutions that enhance network performance and reliability. The company develops advanced inspection systems and testing instruments, focusing on critical areas such as RF spectrum analysis, OTDR measurement, and quality control. With a commitment to innovation, Exfo supports the telecommunications industry by providing tools for fronthaul monitoring and ensuring optimal network functionality, thereby enabling seamless connectivity in an increasingly digital world.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

144 Patents

#3 in Quebec

#85 in Canada

#5,666 in the World

Exfo Inc.

Forward Citations = 850

102 inventors:

Stephane Perron (21 out of 21 patents)

Michel Leclerc (19 out of 19 patents)

Gang He (18 out of 26 patents)

4. Bernard Ruchet (18 out of 19 patents)

5. Mario L'Heureux (15 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Exfo Inc.. Retrieved from https://idiyas.com/company/exfo

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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