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Patent Attorneys

Masanori HirotaSeiji OzawaYusaku TokaiKazuhiro MatsudaKazuya TakatsuMakoto HoriuchiMasako YamanouchiShohei FujimotoShuichi SonomotoAkihiro YamamuraSatoshi MorikawaHiroyuki Tomita

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Greeting Message


As ensuring the protection of intellectual properties is a matter of growing concern these days, patent attorneys with expert knowledge and experience are particularly needed.
We, Hirota & Associates, as intellectual property experts, draw on our experiences and expertise to serve our clients and to meet their expectations in services including drafting clear specifications for rights, giving expert opinions concerning patentability or possible conflicts of rights, and engaging in intellectual property litigations.
Under our policy of keeping close communication with clients in order to add further to their valued inventions, we sometimes take a bold step without being bound by conventional ideas. At the same time we are discreet and careful. As such, we believe that our approach, which is to strive to make a breakthrough and never give up, will meet your expectations.
All of us at Hirota & Associates will always do our best at securing and protecting your intellectual properties under our motto, “Today is a new day.”

Representative, Patent Attorney
Masanori Hirota

Patent Attorneys


Consulting Lawyers

  • Tomohiko Makino
  • Ippei Hirota