Korean inventions filed in the US rose 46%
KR → US+46%KR → JP+38%KR → EP+24%KR → CN+17%CN → US+12%EP → KR+9%EP → US+8%CN → JP+7%CN → KR+6%CN → EP+6%EP → JP+5%JP → KR+4%JP → US+2%US → KR+2%US → JP+1%US → EP-1%JP → EP-2%JP → CN-3%US → CN-5%EP → CN-9%
152Kpatent families in the busiest corridorCN→US
+46%the fastest-growing corridorKR→US
25%of CN → US work goes to ten firms in the USCN→US
Corridors
Firms sending work from Japan
| # | Firm | Share | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | ▲1 | SHIGA International Patent Office | 1,094 | 5.3% | +0.84 | 73 | 6 | |
| 2 | ▼1 | Sakai International Patent Office | 751 | 3.6% | -0.96 | 43 | 8 | |
| 3 | ▲3 | Fukami Patent Office, P.C. | 722 | 3.5% | +1.49 | 38 | 4 | |
| 4 | · | Soen International | 567 | 2.8% | +0.39 | 40 | 5 | |
| 5 | ▲3 | SUGIMURA & Partners | 501 | 2.4% | +0.58 | 27 | 9 | |
| 6 | ▼1 | Taiyo International Patent | 491 | 2.4% | +0.27 | 40 | 9 | |
| 7 | ▼4 | ITOH International Patent Office | 410 | 2.0% | -0.88 | 41 | 10 | |
| 8 | ▲8 | Arai International Patent Office | 354 | 1.7% | +0.41 | 13 | 1 | |
| 9 | ▲2 | Seiwa Patent & Law Office Tokyo | 300 | 1.5% | -0.01 | 28 | 4 | |
| 10 | ▲2 | Otani Patent Office | 264 | 1.3% | -0.16 | 14 | 1 | |
+785 ranked firmsFull table | ||||||||
Families each firm handled, 2020–2022. Arrows show the rank change since 2017–2019.
Technology
| Overall | AHuman necessities | BOperations and transport | CChemistry and metallurgy | DTextiles and paper | EFixed constructions | FMechanical engineering | GPhysics | HElectricity | |
|---|---|---|---|---|---|---|---|---|---|
| SHIGA International Patent Office | #1 | 3 | 1 | 1 | 5 | 6 | 2 | 4 | 1 |
| Sakai International Patent Office | #2 | 6 | 6 | 1 | 2 | ||||
| Fukami Patent Office, P.C. | #3 | 2 | 7 | 3 | 2 | 6 | |||
| Soen International | #4 | 3 | 5 | 3 | 5 | 6 | 5 | ||
| SUGIMURA & Partners | #5 | 3 | 2 | 10 | 8 | 8 | 10 | ||
| Taiyo International Patent | #6 | 6 | 4 | 5 | 10 | 3 | 9 | ||
| ITOH International Patent Office | #7 | 3 | 7 | 3 | |||||
| Seiwa Patent & Law Office Tokyo | #9 | 7 | 6 | 1 | |||||
| KOTOBUKI Patent & Trademark Office | Top 5% | 7 | 8 | 2 | |||||
| Yuasa Hara | Top 5% | 1 | |||||||
| Kaichi Patent Attorneys | Top 10% | 1 | 10 | ||||||
| Kyogaku International Patent Office | Top 10% | 2 | |||||||
| Kisa Patent & Trademark Office | Top 10% | 1 | |||||||
| 弁理士法人ATEN | Top 25% | 2 | 7 | ||||||
| Yasuda Okamoto Patent Firm | Top 25% | 2 |
Rank in each IPC section, by patent families 2020–2022. Overall: rank in the whole corridor, shown as a band beyond 10th.
Applicants
| # | Applicant | Families | Offices per family |
|---|---|---|---|
| 1 | Mitsubishi Electric Corporation | 3,168 | 1.89 |
| 2 | MURATA MANUFACTURING CO | 1,201 | 1.98 |
| 3 | CANON KK | 1,161 | 2.11 |
| 4 | FANUC CORP | 1,010 | 1.98 |
| 5 | JAPAN TELECOMMUNICATION TELEPHONE JOINT STOCK AGENCY | 851 | 1.65 |
| 6 | NIPPON STEEL CORP | 774 | 3.30 |
| 7 | NTT DOCOMO INC | 743 | 2.09 |
| 8 | KYOCERA CORP | 728 | 2.47 |
| 9 | SONY GROUP CORP | 682 | 2.35 |
| 10 | JFE STEEL CORP | 616 | 3.42 |
+954 ranked applicants | |||
Top 10 by patent families filed abroad, 2020–2022.
Method
| Measure | What it counts | Minimum |
|---|---|---|
| Volume | Families a firm handled in the corridor | 10 families |
| Momentum | Change in market share since the previous period | 10 families |
| Breadth | Firms on the other side it worked with | 10 families, 3 partners |
| Openness | Partners that are new in the last two years | 10 families, 3 partners |
| Reach | Other IP5 offices an applicant files in, per family | 100 families |
SourcesPublished records of the IP5 offices and EUIPO
PeriodsPatents: 2020–2022 vs 2017–2019, by priority year. Trademarks: 2023–2025 vs 2020–2022, by filing year.
Not rankedIndividuals, in-house IP teams, applicant–firm pairs
Ranks come from the data only. Subscriptions, payments and partnerships never change a rank.
Corrections close on December 2, 2026. The corrected edition is 2026.1.No corrections yetReport an error