This experiment has ended. Data collection stopped December 2025.

Japanese Patent Attorney Rankings

日本特許弁理士ランキング

Analyzing 250,415 patent applications

Updated: 12/7/2025

Grant Rate / 特許率
50.1%
Of total applications / 全出願に対する割合
Average Time to Grant / 平均特許査定期間
1020 days
2.8 years / 約2.8年
Total Attorneys / 弁理士数
4,288
In database / データベース内
Total Applications / 総出願数
250,415
In patent database / 特許データベース内
Showing 1-100 of 4288 attorneys (sorted by granted patents)
1

志賀　正武

100064908
Total
2139
Granted
1208
Not
931
Rate
56.5%
2

蔵田　昌俊

100108855
Total
1971
Granted
903
Not
1068
Rate
45.8%
3

峰　隆司

100075672
Total
1965
Granted
899
Not
1066
Rate
45.8%
4

野河　信久

100103034
Total
1950
Granted
892
Not
1058
Rate
45.7%
5

中村　誠

100088683
Total
1946
Granted
885
Not
1061
Rate
45.5%
6

福原　淑弘

100109830
Total
1941
Granted
882
Not
1059
Rate
45.4%
7

河野　哲

100091351
Total
1928
Granted
869
Not
1059
Rate
45.1%
8

砂川　克

100140176
Total
1913
Granted
867
Not
1046
Rate
45.3%
9

鈴江　武彦

100058479
Total
1921
Granted
863
Not
1058
Rate
44.9%
10

白根　俊郎

100095441
Total
1907
Granted
854
Not
1053
Rate
44.8%
11

村松　貞男

100084618
Total
1909
Granted
853
Not
1056
Rate
44.7%
12

河野　直樹

100153051
Total
1877
Granted
850
Not
1027
Rate
45.3%
13

佐藤　立志

100124394
Total
1877
Granted
850
Not
1027
Rate
45.3%
14

岡田　貴志

100112807
Total
1877
Granted
850
Not
1027
Rate
45.3%
15

堀内　美保子

100111073
Total
1877
Granted
850
Not
1027
Rate
45.3%
16

幸長　保次郎

100119976
Total
1855
Granted
829
Not
1026
Rate
44.7%
17

勝村　紘

100101812
Total
1854
Granted
829
Not
1025
Rate
44.7%
18

竹内　将訓

100134290
Total
1848
Granted
826
Not
1022
Rate
44.7%
19

市原　卓三

100127144
Total
1847
Granted
826
Not
1021
Rate
44.7%
20

河井　将次

100070437
Total
1809
Granted
802
Not
1007
Rate
44.3%
21

山下　元

100141933
Total
1818
Granted
802
Not
1016
Rate
44.1%
22

酒井　宏明

100089118
Total
1400
Granted
756
Not
644
Rate
54.0%
23

村山　靖彦

100108453
Total
1255
Granted
715
Not
540
Rate
57.0%
24

風間　鉄也

100100952
Total
1567
Granted
641
Not
926
Rate
40.9%
25

三好　秀和

100083806
Total
1364
Granted
617
Not
747
Rate
45.2%
26

高橋　詔男

100108578
Total
1117
Granted
610
Not
507
Rate
54.6%
27

渡邊　隆

100089037
Total
1170
Granted
600
Not
570
Rate
51.3%
28

伊東　忠彦

100070150
Total
1074
Granted
585
Not
489
Rate
54.5%
29

伊藤　正和

100095500
Total
1150
Granted
522
Not
628
Rate
45.4%
30

藤井　兼太郎

100120156
Total
829
Granted
513
Not
316
Rate
61.9%
31

内藤　浩樹

100109667
Total
1738
Granted
502
Not
1236
Rate
28.9%
32

鈴木　三義

100094400
Total
839
Granted
500
Not
339
Rate
59.6%
33

井上　学

100100310
Total
849
Granted
466
Not
383
Rate
54.9%
34

高橋　俊一

100101247
Total
1038
Granted
466
Not
572
Rate
44.9%
35

加藤　和詳

100084995
Total
1109
Granted
459
Not
650
Rate
41.4%
36

中島　淳

100079049
Total
1108
Granted
458
Not
650
Rate
41.3%
37

長谷川　芳樹

100088155
Total
770
Granted
455
Not
315
Rate
59.1%
38

岩▲崎▼　幸邦

100100712
Total
982
Granted
442
Not
540
Rate
45.0%
39

恩田　博宣

100068755
Total
887
Granted
424
Not
463
Rate
47.8%
40

恩田　誠

100105957
Total
887
Granted
424
Not
463
Rate
47.8%
41

深見　久郎

100064746
Total
875
Granted
423
Not
452
Rate
48.3%
42

森田　俊雄

100085132
Total
875
Granted
423
Not
452
Rate
48.3%
43

田中　光雄

100081422
Total
762
Granted
409
Not
353
Rate
53.7%
44

堀井　豊

100096781
Total
835
Granted
387
Not
448
Rate
46.3%
45

高松　俊雄

100098327
Total
895
Granted
386
Not
509
Rate
43.1%
46

西　和哉

100107836
Total
735
Granted
381
Not
354
Rate
51.8%
47

荒川　伸夫

100111246
Total
816
Granted
375
Not
441
Rate
46.0%
48

西元　勝一

100085279
Total
981
Granted
374
Not
607
Rate
38.1%
49

阿部　琢磨

100126240
Total
835
Granted
371
Not
464
Rate
44.4%
50

黒岩　創吾

100124442
Total
835
Granted
371
Not
464
Rate
44.4%
51

福田　浩志

100099025
Total
983
Granted
370
Not
613
Rate
37.6%
52

大塚　康徳

100076428
Total
505
Granted
354
Not
151
Rate
70.1%
53

高柳　司郎

100112508
Total
505
Granted
354
Not
151
Rate
70.1%
54

大塚　康弘

100115071
Total
505
Granted
354
Not
151
Rate
70.1%
55

木村　秀二

100116894
Total
505
Granted
354
Not
151
Rate
70.1%
56

戸田　裕二

100098660
Total
675
Granted
353
Not
322
Rate
52.3%
57

下山　治

100130409
Total
484
Granted
342
Not
142
Rate
70.7%
58

西川　惠清

100087767
Total
603
Granted
339
Not
264
Rate
56.2%
59

青木　篤

100099759
Total
648
Granted
338
Not
310
Rate
52.2%
60

永川　行光

100134175
Total
471
Granted
332
Not
139
Rate
70.5%
61

磯野　道造

100064414
Total
462
Granted
323
Not
139
Rate
69.9%
62

仲村　義平

100083703
Total
674
Granted
313
Not
361
Rate
46.4%
63

酒井　將行

100109162
Total
672
Granted
312
Not
360
Rate
46.4%
64

荒船　博司

100090033
Total
571
Granted
307
Not
264
Rate
53.8%
65

黒木　義樹

100113435
Total
524
Granted
304
Not
220
Rate
58.0%
66

川又　澄雄

100100929
Total
669
Granted
293
Not
376
Rate
43.8%
67

吉田　研二

100075258
Total
486
Granted
292
Not
194
Rate
60.1%
68

石田　純

100096976
Total
486
Granted
292
Not
194
Rate
60.1%
69

北村　修一郎

100107308
Total
398
Granted
278
Not
120
Rate
69.8%
70

永野　大介

100109151
Total
1342
Granted
277
Not
1065
Rate
20.6%
71

多田　悦夫

100111545
Total
369
Granted
268
Not
101
Rate
72.6%
72

上柳　雅誉

100095728
Total
932
Granted
267
Not
665
Rate
28.6%
73

須澤　修

100107261
Total
932
Granted
267
Not
665
Rate
28.6%
74

宮坂　一彦

100127661
Total
932
Granted
267
Not
665
Rate
28.6%
75

野田　久登

100098316
Total
570
Granted
251
Not
319
Rate
44.0%
76

名古屋国際弁理士法人

110000578
Total
357
Granted
241
Not
116
Rate
67.5%
77

稲葉　良幸

100079108
Total
401
Granted
240
Not
161
Rate
59.9%
78

寺内　伊久郎

100137202
Total
419
Granted
240
Not
179
Rate
57.3%
79

前田　弘

100077931
Total
640
Granted
240
Not
400
Rate
37.5%
80

竹内　祐二

100113262
Total
640
Granted
240
Not
400
Rate
37.5%
81

小林　久夫

100085198
Total
323
Granted
234
Not
89
Rate
72.4%
82

安島　清

100098604
Total
322
Granted
234
Not
88
Rate
72.7%
83

高梨　範夫

100087620
Total
322
Granted
234
Not
88
Rate
72.7%
84

竹内　宏

100110939
Total
601
Granted
229
Not
372
Rate
38.1%
85

嶋田　高久

100110940
Total
601
Granted
229
Not
372
Rate
38.1%
86

今江　克実

100115059
Total
601
Granted
229
Not
372
Rate
38.1%
87

二宮　克也

100117581
Total
600
Granted
228
Not
372
Rate
38.0%
88

原田　智雄

100117710
Total
600
Granted
228
Not
372
Rate
38.0%
89

関　啓

100124671
Total
599
Granted
227
Not
372
Rate
37.9%
90

杉浦　靖也

100131060
Total
599
Granted
227
Not
372
Rate
37.9%
91

井関　勝守

100121728
Total
588
Granted
224
Not
364
Rate
38.1%
92

棚井　澄雄

100106909
Total
323
Granted
223
Not
100
Rate
69.0%
93

杉村　憲司

100147485
Total
463
Granted
223
Not
240
Rate
48.2%
94

熊倉　禎男

100082005
Total
400
Granted
223
Not
177
Rate
55.8%
95

宮崎　昭夫

100123788
Total
484
Granted
222
Not
262
Rate
45.9%
96

ポレール弁理士法人

110000350
Total
479
Granted
221
Not
258
Rate
46.1%
97

荒船　良男

100093045
Total
376
Granted
220
Not
156
Rate
58.5%
98

吉武　賢次

100075812
Total
436
Granted
215
Not
221
Rate
49.3%
99

小谷　悦司

100067828
Total
450
Granted
214
Not
236
Rate
47.6%
100

小谷　昌崇

100115381
Total
450
Granted
214
Not
236
Rate
47.6%
Page 1 of 43
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