Exfo has a total of 608 patents globally, out of which 463 have been granted. Of these 608 patents, more than 67% patents are active. The United States of America is where Exfo has filed the maximum number of patents, followed by Europe and Germany. Parallelly, The United States of America seems to be the main focused R&D center and also Canada is the origin country of Exfo.
Exfo was founded in 1984. The Company designs, manufactures and markets fiber optic test, measurement and monitoring instruments for the telecommunications industry. The Company’s equipment is used to diagnose and repair problems within an optical network, monitor the quality of an optical signal as it passes through a network, and analyze equipment during production.
Do read about some of the most popular patents of Exfo which have been covered by us in this article and also you can find Exfo patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Exfo patent portfolio.
How many patents does the Founder and CEO of Exfo have?
The Founder Germain Lamonde has 0 patent and CEO Philippe Morin has 0 patent.
How many patents does Exfo have?
Exfo has a total of 608 patents globally. These patents belong to 255 unique patent families. Out of 608 patents, 412 patents are active.
How Many Patents did Exfo File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Exfo Applications Filed | Exfo Patents Granted |
| 2023 | 1 | 26 |
| 2022 | 21 | 68 |
| 2021 | 70 | 56 |
| 2020 | 55 | 36 |
| 2019 | 54 | 30 |
| 2018 | 34 | 40 |
| 2017 | 7 | 33 |
| 2016 | 29 | 31 |
| 2015 | 38 | 22 |
| 2014 | 30 | 22 |
| 2013 | 33 | 13 |
| 2012 | 23 | 11 |
How many Exfo patents are Alive/Dead?
Worldwide Patents
How Many Patents did Exfo File in Different Countries?
Countries in which Exfo Filed Patents
| Country | Patents |
| United States Of America | 201 |
| Europe | 115 |
| Germany | 54 |
| Austria | 47 |
| China | 44 |
| United Kingdom | 24 |
| Canada | 21 |
| Finland | 20 |
| Japan | 18 |
| Korea (South) | 7 |
| India | 6 |
| Spain | 5 |
| Poland | 4 |
| Italy | 4 |
| France | 4 |
| Lithuania | 3 |
| Denmark | 3 |
| Hong Kong (S.A.R.) | 3 |
| South Africa | 2 |
| Australia | 2 |
| Russia | 1 |
| Slovakia | 1 |
| Hungary | 1 |
Where are Research Centers of Exfo Patents Located?
10 Best Exfo Patents
US8032168B2 is the most popular patent in the Exfo portfolio. It has received 129 citations so far from companies like Motorola, Tektronix and Huawei.
Below is the list of 10 most cited patents of Exfo:
| Publication Number | Citation Count |
| US8032168B2 | 129 |
| USD739429S1 | 84 |
| US7454494B1 | 38 |
| WO2010043056A1 | 33 |
| USD742394S1 | 31 |
| US8306063B2 | 30 |
| US20100211675A1 | 28 |
| US9170173B2 | 26 |
| US20100145755A1 | 25 |
| US20030174329A1 | 24 |
How many inventions of other companies were rejected due to Exfo patents?
The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Exfo invention. They couldn’t because Exfo had protected those before them.
Examiners at the USPTO referred 31 Exfo patents in 193 rejections (35 USC § 102 or 35 USC § 103 types).
The top citing companies in the Exfo patent portfolio are National Bank of Canada, Viavi Solutions and Huawei.
List of the Companies whose Patents were rejected citing Exfo –
| Company | Number of Patent Applications that faced Rejection Citing Exfo Patents | Number of Rejections (102 & 103) |
| National Bank Of Canada | 4 | 9 |
| Viavi Solutions | 4 | 10 |
| Huawei | 3 | 6 |
| Ericsson | 3 | 4 |
| 3M Innovative Properties | 2 | 5 |
| Juniper Networks | 2 | 2 |
| Afl Telecommunications | 2 | 3 |
| Lifodas Uab | 2 | 2 |
| Samsung | 2 | 2 |
| Ciena | 2 | 3 |
Count of 102 and 103 Type Rejections based on Exfo Patents
Top Exfo Patents used in Rejecting Most Patent Applications
| Patent Number | Count of Rejected Applications |
| US8687957B2 | 10 |
| US8306063B2 | 5 |
| US8576389B2 | 4 |
| US10371596B2 | 4 |
| US9841579B2 | 4 |
| US8244843B1 | 4 |
| US9733616B2 | 3 |
| US8032168B2 | 3 |
| US8351900B2 | 3 |
| US7512069B2 | 3 |
| US20030174329A1 | 3 |
| US8768180B2 | 2 |
| US20100211675A1 | 2 |
| US7995915B2 | 2 |
| US9112604B2 | 2 |
What Percentage of Exfo US Patent Applications were Granted?
Exfo (Excluding its subsidiaries) has filed 149 patent applications at USPTO so far (Excluding Design and PCT applications). Out of these 124 have been granted leading to a grant rate of 95.38%.
Below are the key stats of Exfo patent prosecution at the USPTO.
Which Law Firms Filed Most US Patents for Exfo?
| Law Firm | Total Applications | Success Rate |
| Exfo | 53 | 97.56% |
| Ridout & Maybee | 24 | 91.67% |
| Baratta Law Pllc Exfo | 13 | 100.00% |
| Norton Rose Fulbright Canada | 11 | 90.91% |
| Erise Ip | 10 | 100.00% |
| Burns & Levinson | 8 | 100.00% |
| Mccarter & English | 6 | 100.00% |
| Wendy W Koba | 4 | 100.00% |
| Mcdonnell Boehnen Hulbert & Berghoff | 3 | 100.00% |
| Thomas Adams | 3 | 100.00% |
hat are Exfo key innovation segments?
What Technologies are Covered by Exfo?
The chart below distributes patents filed by Exfo