<2017-JP> Firm Ranking of the number of Japanese granted patents in the Sound field in 2017

2019-01-28 2019-04-28

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 2017 (registration date).
First country: Japan (i.e., (i) patents with claiming priority of a Japanese application, (ii) patents based on Japanese domestic application, or (iii) patents based on PCT application whose receiving office is Japan Patent Office without claiming any 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	75	NAKAO & ASSOCIATES	View
2	36	Sakai International Patent Office	View
3	35	Ogawa International Patent Firm	None
4	34	OHCHI INTERNATIONAL IP	View
5	34	SHIGA International Patent Office	View
6	28	Kashima & Associates	View
7	26	Prospec Patents & Trademarks	View
8	25	CHUO INTERNATIONAL PATENT FIRM	View
9	25	Asahi Patent Firm	View
10	22	Minami International Patent Firm	None
11	22	Nagoya International Patent Firm	View
12	22	Isshiki & Co.	View
13	22	TAIYO, NAKAJIMA & KATO	View
14	17	Yoshida & Wakabayashi IP Firm	View
15	16	SUZUYE & SUZUYE Intellectual Property Law	View
16	16	Sanno Patent Office	View
17	15	SEIWA PATENT & LAW	View
18	14	Matsumoto Patent Firm	None
19	14	Osuga & Associates	View
20	14	SUGIMURA & Partners	View
21	12	Shobayashi International Patent &Trademark Office	View
22	12	In-house patent attorney	－
23	12	Takahashi Patent Firm	None
24	12	Isono International Patent Office, P. C.	View
25	11	Patent Profession Corporation Kinoshita & Associates	View

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.