JP

Our Attorneys

Centennial Law Firm provides a wide range of legal services, primarily focused on corporate law, tailored to meet our clients’ specific needs.

We are also flexible in handling legal matters not explicitly listed here.

Partner Attorney

Takuto Ishida

(Daini Tokyo Bar Association and the State Bar of California)

  • Profile
  • Born in Akita, Japan
  • Mar. 2006: The University of Tokyo (LL.B.)
  • Mar. 2008: Chiba University Graduate School of Law (J.D.)
  • Sep. 2008: Passed the Japan Bar Examination
  • Dec. 2009: Registered with the Japan Federation of Bar Associations (62nd)
  • Aug. 2015: University of California, Berkeley (LL.M.)
  • Dec. 2017: Registered with the State Bar of California
  • 2009–2020: Associate at Tokyo-based law firms
  • Apr. 2020: Joined Genoa Law Firm as a Partner
  • Mar. 2025: Co-founded Centennial Law Firm
  • Publications
  • THE CARTELS AND LENIENCY REVIEW  11th (2023) and 12th (2024) edition (Japan Chapter)
  • Languages
  • Japanese
  • English
  • Interests
  • kickboxing
  • watching martial arts
  • saunas & hot springs

Foreign Law Attorney (Partner)

Yu-Xuan Cheng

(Taipei Bar Association and the State Bar of California)

  • Profile
  • Born in Taichung, Taiwan
  • 2012: National Taiwan University (LL.B.)
  • 2012: Passed the Taiwan Bar Examination
  • 2013: Registered as Taiwanese Attorney (Lüshi)
  • 2013–2015: In-house counsel at a major Taiwanese corporation
  • 2016: University of California, Berkeley (LL.M.)
  • 2017–2018: PwC Legal Taiwan
  • 2018–2020: Hubert Hsu & Associates
  • 2021: Waseda University Graduate School of Law, Master’s in Intellectual Property Law
  • 2022: Registered with the State Bar of California
  • 2021–2024: Mori Hamada & Matsumoto Law Firm
  • Jul. 2024: Joined Genoa Law Firm as a Partner
  • Mar. 2025: Co-founded Centennial Law Firm
  • Publications
  • Protecting IP Licenses and Jointly Owned IP in the Age of COVID-19: Insolvency and Force Majeure Events under Japanese Law, GRUR International, Vol.70 pp.463–485 (2021) (acknowledged as contributing research assistant)
  • Statutory Damages in Copyright Law: Additional Damages As a Possible Remedy under Japanese Law (Patent, Vol.75 No.2 pp.68–81, 2022)
  • Taiwan Business Legal Practice (Co-author, SHOJIHOMU CO., Ltd., 2022)
  • Languages
  • Mandarin Chinese
  • Taiwanese
  • English
  • Japanese
  • Korean
  • German
  • Interests
  • traveling
  • history
  • studying foreign languages

Partner Attorney

Tetsuro Yamaguchi

(Dai-Ichi Tokyo Bar Association)

  • Profile
  • Born in Kagoshima, Japan
  • Mar. 2010: Kyushu University (LL.B.)
  • Mar. 2012: Chuo Law School (J.D.)
  • Sep. 2012: Passed the Japan Bar Examination
  • Jan. 2014: Registered with Japan Federation of Bar Associations (66th)
  • Jan. 2014 – Sep. 2016: Associate at a Tokyo-based law firm
  • Oct. 2016 – Dec. 2024: Fairness Law Office
  • Jan. 2025: Joined Genoa Law Firm as a Partner
  • Mar. 2025: Co-founded Centennial Law Firm
  • Interests
  • visiting traditional hot spring inns
  • traveling
  • real estate
  • watching reality shows
  • beer

Attorney

Masashi Okabe

(Tokyo Bar Association)

  • Profile
  • Born in Tokyo, Japan
  • Mar. 2016: Kokushikan University (LL.B.)
  • Mar. 2018: Waseda University Graduate School of Law (J.D.)
  • Sep. 2019: Passed the Japan Bar Examination
  • Dec. 2020: Registered with Japan Federation of Bar Associations (73rd) ,Joined Genoa Law Firm
  • Mar. 2025: Transferred to Centennial Law Firm
  • Qualifications
  • Licensed Real Estate Transaction Agent (宅地建物取引士)
  • Publications
  • Practical Manual: Creating and Executing Wills (Co-author, SHINNIPPON-HOKI PUBLISHING Co., Ltd., 2022)
  • Interests
  • snowboarding
  • futsal
  • whisky

Attorney

Takuya Kishimoto

(Daini Tokyo Bar Association)

  • Profile
  • Born in Nara, Japan
  • Mar. 2019: Kindai University (LL.B.)
  • Mar. 2021: Osaka University Law School (J.D.)
  • Sep. 2021: Passed the Japan Bar Examination
  • Dec. 2022: Registered with Japan Federation of Bar Associations (75th),Joined Genoa Law Firm
  • Mar. 2025: Transferred to Centennial Law Firm
  • Interests
  • golf (beginner)
  • futsal
  • Korean TV dramas