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Dr. Yajie Ruan


European Patent Attorney

Telecommunications Engineer

Yajie is European Patent Attorney at Maiwald where she provides support to the firm’s engineering department. She specializes mainly in patent prosecution and opposition and appeal proceedings in the areas of telecommunications, signal processing, computer software as well as sensor technology and control technology.

Yajie obtained her doctoral degree in the field of telecommunications. Her doctoral research was carried out at Hamburg University of Technology and was supported by Infineon Technologies.

since 2022
Patent attorney at Maiwald
2021 - 2022
Patent attorney trainee at Maiwald
2010 - 2020
Technical Expert at an IP law firm

Admitted to practice as European patent attorney
2006 - 2010
Doctoral degree in the field of Telecommunications from Hamburg University of Technology
2003 - 2005
Master’s degree in the field of Digital Communications at Kiel University

  • Patent prosecution and portfolio management
  • Filing strategies and drafting patent applications
  • Freedom-to-operate- and validity analysis
  • Opposition and nullity proceedings

  • Chinese
  • English
  • German