<2019-All> Firm Ranking of the number of Japanese granted patents in the Sound field in 2019

2020-04-26 2020-04-19

The following table shows the ranking of Japanese IP law firm. The ranking is based on the following conditions.

Technical field: Sound (digital audio processing, tuning device, speech processing, voice search, noise cancellation, microphone, piano, electronic instrument, etc.)
Status: Japanese granted patents in 2019 (registration date).
First country: All (i.e., patents with claiming priority of a Japanese application or a foreign application, or without claiming priority).
Count: The number of patents handled by each Japanese IP law firm was counted (if the applicant is represented by a firm member (attorney), it was counted as being handled by the firm).

Ranking	No.	IP law firm	Website
1	105	SHIGA International Patent Office	View
2	97	ITOH International Patent Office	View
3	86	NAKAO & ASSOCIATES	View
4	77	Sakai International Patent Office	View
5	42	Osuga & Associates	View
6	36	OHCHI INTERNATIONAL IP	View
7	35	TAIYO, NAKAJIMA & KATO	View
8	35	SUZUYE & SUZUYE Intellectual Property Law	View
9	25	Minami International Patent Firm	N/A
10	25	Ohtsuka Patent Office	View
11	24	Kashima & Associates	View
12	23	Takahashi Hayashi and Partner Patent Attorneys inc.	View
13	22	Isshiki & Co.	View
14	21	ION PATENT	View
15	19	SHUSAKU・YAMAMOTO	View
16	19	Okada Patent Firm	View
17	19	Aoyama & Partners	View
18	17	IP Firm SHUWA	View
19	17	HARAKENZO WORLD PATENT & TRADEMARK	View
20	16	Rise Patent Firm	View
21	16	Nishikawa & Associates	View
22	15	Yoshida & Wakabayashi IP Firm	View
23	15	TMI Associates	View
24	15	CHUO INTERNATIONAL PATENT FIRM	View
25	14	Sankyo International Patent Attorneys Office	View
26	14	Nagoya International Patent Firm	View
27	13	Isono International Patent Office, P. C.	View
28	12	Fukami Patent Office, P.C.	View
29	12	S & S INTERNATIONAL PPC	View
30	12	Matsumoto Patent Firm	N/A

In preparing the table, a patent search expert conducted a patent search using patent classification and keywords (as necessary) in order to extract patents in specific technical field (here, Sound field).
In the patent search, it was confirmed that a high-accuracy population (i.e., a population not including non-relevant fields) of patents was obtained. Subsequently, the population was used to create the table.

By entering the Firm name or Attorney name in the "Legal Representative Name" column of Patentscope (search system of WIPO), you can find the patent information handled by each Firm.