• Seamless cooperation

  • Communication across all borders

  • Emphasis on providing practical advice

123

Latest News

Welcome to the official website of Sonderhoff & Einsel Patent Attorneys Corporation.

We will use this platform to share the latest developments in intellectual property law, industry insights, and important firm announcements.

Thank you for your continued trust and partnership.

NOTICE: Golden Week Holidays

/
0 Comments
Our office will be closed on the following dates due to the Japan’s…
Read more
View All News

Who are we?

Founded in Japan in 1910, Sonderhoff & Einsel is a multicultural firm with professionals from Europe, Japan, the US and China. Our legal, IP, tax and accounting experts provide practical, goal-oriented solutions across a wide range of practice areas to our international and Japanese clients.

Learn more…

Access

  • Tokyo Location

    Shin Marunouchi Center Bldg. 18th Floor
    1-6-2 Marunouchi, Chiyoda-ku
    Tokyo 100-0005

  • Within Tokyo

    Our office is located within walking distance from Tokyo Station (5 min) and Otemachi Station (5 min).
    Tokyo Station: Marunouchi North Exit (towards Marunouchi Oazo Complex)
    Otemachi Station: Exit B2b

  • From Narita Airport

    We suggest taking the Narita Express from Narita Airport to Tokyo Station. Duration: about 60 min.

  • From Haneda Airport

    We recommend taking the Tokyo Monorail, changing to Tokyo Station-bound JR lines at Hamamatsucho Station.

Calendar

June 2026
SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4

Closed