PatentVest Releases First-Ever Quantum Computing Rankings
Designed for investors, board members, and CEOs, the latest PatentVest Pulse Report reveals which companies are emerging as true leaders as quantum computing shifts from R&D to commercialization
Addison, TX, Aug. 19, 2025 (GLOBE NEWSWIRE) -- PatentVest, the first fully integrated IP intelligence and legal strategy firm, today announced the release of its , the first-ever rankings of leadership in the emerging $850B quantum computing market. Designed for investors, board members, and CEOs, the report profiles 38 companies worldwide advancing commercialization through competitive benchmarking and maps the broader intellectual property landscape, drawing on 14,762 patent families to show that leadership is far from settled, with corporate giants competing head to head against concentrated startup portfolios.
“Quantum computing has reached a historic inflection point,” said Will Rosellini, Chief IP Officer at PatentVest. “What was once pure R&D is now shifting into commercialization, and the winners of this race will own the future. With billions in venture capital already flowing in and public companies trading at multi-billion-dollar valuations, the stakes have never been higher. That’s why this report evaluates both competitive progress and IP defensibility to separate signal from noise and show who is truly positioned to lead.”
Competitive Benchmarking: The Top Companies Racing Toward Leadership
As part of the analysis, PatentVest evaluated 38 companies across technology modality, validation milestones, funding and valuation history, commercialization progress, and the defensibility of their patent portfolios.
Emerging Quantum Computing Companies
Ranked by Global Patent Publications with Total Patent Families (2025)
| Rank | Company Name | Publications | Families |
| 1 | D-Wave Quantum Inc. | 1,338 | 262 |
| 2 | Origin Quantum | 1,326 | 1,234 |
| 3 | IonQ Inc. | 1,224 | 261 |
| 4 | PsiQuantum | 743 | 188 |
| 5 | Quantinuum | 410 | 188 |
| 6 | IQM Quantum Computers | 399 | 101 |
| 7 | Rigetti Computing, Inc. | 348 | 84 |
| 8 | Infleqtion, Inc. | 260 | 93 |
| 9 | Pasqal | 124 | 55 |
| 10 | Silicon Quantum Computing | 121 | 28 |
| 11 | Seeqc | 119 | 26 |
| 12 | Xanadu | 114 | 40 |
| 13 | ORCA Computing | 102 | 40 |
| 14 | Quantum Motion | 80 | 15 |
| 15 | Atom Computing | 72 | 22 |
| 16 | Equal1 | 70 | 11 |
| 17 | eleQtron | 61 | 30 |
| 18 | Universal Quantum | 61 | 15 |
| 19 | Alice&Bob | 57 | 23 |
| 20 | Anyon Systems | 53 | 18 |
| 21 | Quantum Computing Inc (QCi) | 52 | 11 |
| 22 | Huayi Quantum | 45 | 45 |
| 23 | Oxford Ionics | 42 | 17 |
| 24 | Diraq | 40 | 11 |
| 25 | Alpine Quantum Technologies (AQT) | 40 | 15 |
| 26 | Quantum Brilliance | 22 | 5 |
| 27 | QuEra Computing | 21 | 7 |
| 28 | C12 | 21 | 6 |
| 29 | Quandela | 20 | 8 |
| 30 | Nord Quantique | 16 | 4 |
| 31 | Oxford Quantum Circuits (OQC) | 14 | 9 |
| 32 | QuantWare | 13 | 3 |
| 33 | Nanofiber Quantum Technologies | 13 | 4 |
| 34 | AegiQ | 13 | 5 |
| 35 | SpinQ | 9 | 9 |
| 36 | Quantum Circuits Inc. | 6 | 2 |
| 37 | SemiQon | 6 | 3 |
| 38 | Atlantic Quantum | 2 | 1 |
The results show a highly concentrated leadership group. D-Wave, Origin Quantum, and IonQ stand out as frontrunners, while heavily funded challengers such as PsiQuantum, Quantinuum, and IQM continue to push forward aggressively.
IP Landscape: The Global Leaders
Beyond company-level benchmarking, PatentVest mapped the full intellectual property landscape of quantum computing. The analysis covered 14,762 patent families from 1,743 assignees, identifying which companies and universities are establishing defensible leadership positions. The top corporate assignees are ranked below.
Top 15 Companies in the Quantum Computing IP Landscape
Ranked by Global Patent Publications with Total Patent Families (2015-2025)
| Rank | Assignee | Publications | Families |
| 1 | International Business Machines Corporation | 1,860 | 601 |
| 2 | Alphabet Inc. | 1,223 | 231 |
| 3 | Origin Quantum | 1,040 | 901 |
| 4 | Microsoft Corporation | 621 | 179 |
| 5 | Beijing Baidu Netcom Science and Technology | 545 | 376 |
| 6 | Intel Corporation | 516 | 196 |
| 7 | IonQ Inc. | 354 | 120 |
| 8 | Honeywell International Inc. | 329 | 118 |
| 9 | Tencent Holdings Ltd. | 294 | 114 |
| 10 | Huawei Investment & Holding Co., Ltd. | 272 | 185 |
| 11 | Rigetti Computing Inc. | 232 | 65 |
| 12 | Fujitsu Ltd. | 218 | 109 |
| 13 | D-Wave Quantum Inc. | 208 | 64 |
| 14 | Alibaba Group Holding Limited | 203 | 95 |
| 15 | Bank of America Corporation | 193 | 119 |
Corporate leaders such as IBM, Alphabet, Intel, and Microsoft dominate publication volume, while startups like D-Wave, Rigetti, and Origin Quantum hold highly concentrated, targeted portfolios.
Together, the competitive benchmarking and IP landscape analyses show that leadership in quantum computing will not be decided by scientific milestones or funding size alone. Defensible intellectual property, coupled with the ability to commercialize, will define the winners in this $850B market.
The full report, including complete rankings, methodology, and in-depth company profiles, is available for download at .
About the Methodology
PatentVest’s analysis combined two complementary approaches. The IP landscape was built from its proprietary global patent database and includes 14,762 active families from 1,743 assignees worldwide, mapped across corporate, startup, and academic owners. In parallel, the benchmarking study evaluated 38 public and private quantum hardware companies developing superconducting, trapped-ion, neutral-atom, photonic, silicon-spin, and annealing systems. Each was assessed on technology focus, development progress, funding history, validation milestones, commercialization strategy, and patent defensibility.
About PatentVest
PatentVest, a division of MDB Capital Holdings (Nasdaq: MDBH), is the first integrated IP intelligence, strategy, and law firm designed to help visionary companies become technology leaders. By combining a proprietary database with a proven diligence process and expert analysis, PatentVest delivers actionable insights that help clients navigate complex IP landscapes and stay ahead of the curve. This report is powered by PatentVest’s proprietary IP intelligence platform.
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