<2018-JP> Firm Ranking of the number of Japanese granted patents in the Sound field in 2018

2019-03-27 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 2018 (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	73	NAKAO & ASSOCIATES	View
2	53	Sakai International Patent Office	View
3	35	Kashima & Associates	View
4	30	OHCHI INTERNATIONAL IP	View
5	29	SHIGA International Patent Office	View
6	26	Nagoya International Patent Firm	View
7	25	Minami International Patent Firm	None
8	22	Osuga & Associates	View
9	22	CHUO INTERNATIONAL PATENT FIRM	View
10	20	Prospec Patents & Trademarks	View
11	20	Sanno Patent Office	View
12	17	Shobayashi International Patent &Trademark Office	View
13	14	HARAKENZO WORLD PATENT & TRADEMARK	View
14	14	Ogawa International Patent Firm	None
15	14	In-house patent attorney	－
16	14	Intect International Patent Office	View
17	13	Miyoshi & Miyoshi	View
18	13	Yoshida & Wakabayashi IP Firm	View
19	13	Takahashi Patent Firm	None
20	12	TMI Associates	View
21	12	In-house patent attorney	－
22	11	TAIYO, NAKAJIMA & KATO	View
23	10	In-house patent attorney	－
24	10	SUZUYE & SUZUYE Intellectual Property Law	View
25	10	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.