Pink Sheet is part of Pharma Intelligence UK Limited

This site is operated by Pharma Intelligence UK Limited, a company registered in England and Wales with company number 13787459 whose registered office is 5 Howick Place, London SW1P 1WG. The Pharma Intelligence group is owned by Caerus Topco S.à r.l. and all copyright resides with the group.

This copy is for your personal, non-commercial use. For high-quality copies or electronic reprints for distribution to colleagues or customers, please call +44 (0) 20 3377 3183

Printed By


Wakunaga Pharmaceutical Co., Ltd.

Latest From Wakunaga Pharmaceutical Co., Ltd.

Deal Watch: Celgene Reworks Alliance With Jounce, Gaining Global Rights To Macrophage-Targeting Candidate

Revised agreement of 2016 collaboration returns all vopratelimab rights to Jounce. Gilead fortifies antiviral pipeline in deals with Novartis, Durect.

Deals M & A

Antibiotic Legislation Offers Big GAIN For Small Firm: Rib-X Extends Delafloxacin Exclusivity

Rib-X is among the first to take advantage of the Generating Antibiotic Incentives Now provisions of the FDA reauthorization legislation with five years’ extra exclusivity for its lead broad spectrum antibiotic candidate, a next-generation fluoroquinolone. Designation for the program came swiftly, company says.

BioPharmaceutical United States

Dainippon Sumitomo wins long-running licensing dispute with Wakunaga

Dainippon Sumitomo Pharma (DSP) has prevailed in a legal case brought against it by a smaller Japanese company regarding a terminated licensing deal for a quinolone antibacterial.


Wakunaga takes Japanese quinolone case to Supreme Court

Wakunaga Pharmaceutical has taken its fight with fellow Japanese company Dainippon Sumitomo Pharma (DSP) to the Supreme Court. The small firm has appealed a recent Osaka High Court decision that rejected its claims against DSP in a long-running dispute over a terminated 1998 licensing deal for a quinolone antibacterial. DSP brought the High Court appeal following a 2007 district court decision ordering it to pay ¥890 million ($8.9 million) in damages to Wakunaga (, March 27th, 2009). Wakunaga first filed suit in 2004, claiming then that Dainippon (which merged with Sumitomo Pharma in 2005) had acted improperly.

See All

Company Information

  • Industry
  • Pharmaceuticals
  • Pharmaceuticals
    • Nutraceuticals
  • Other Names / Subsidiaries
    • Wakunaga of America Co Ltd