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Crowdsourcing Patent Examination with the Patent Prosecution Highway

What You Need to Know

  • Key takeaway #1

    The PPH can be a useful tool for streamlining global prosecution of corresponding patent applications—which in turn can reduce costs and increase the chances of successful prosecution.

Client Alert | 12 min read | 05.15.23

The Patent Prosecution Highway (PPH) is a work-share arrangement between the patent offices of different countries. It allows for participating patent offices to share—and thus benefit from—work already performed by other participating patent offices.

In short, when a claim (or claims) of a patent application is allowed in a first patent office, a PPH request may be made to fast-track the examination of a corresponding application in a second patent office based on that allowance. So, for example, when a U.S. patent application is allowed, that allowance can be used to fast-track examination in corresponding foreign applications—or vice versa.

For U.S. applicants, the USPTO also requires that: (1) the claims of the U.S. application correspond in scope to the allowed claims of the foreign application, and (2) substantive examination of the U.S. application has not yet begun. Other countries’ requirements may differ.

Successfully utilizing the PPH can significantly reduce the time it takes for the second patent office to conduct its examination—and it is intended to do just that. While additional benefits may vary from country to country, applications examined under the PPH also generally have higher rates of allowance and suffer less from duplicative examination.

These benefits can streamline global prosecution and reduce overall costs for applicants, particularly in view of the ever growing number of countries participating in PPH programs. Presently, the USPTO has PPH agreements with patent offices of the Europe Union, United Kingdom, China, Japan, Taiwan, Mexico, Israel and several other countries and regions.

For additional information on the PPH, including country specific requirements and PPH strategies for your patent portfolio, please contact your trusted partners at Crowell & Moring.

Insights

Client Alert | 3 min read | 05.16.25

EPA Maintains Current Drinking Water Standards for PFOA and PFOS but Plans To Reconsider Other PFAS Compounds

On May 14, 2025, the Environmental Protection Agency (“EPA”) announced that it will keep the current National Primary Drinking Water Regulations (“NPDWR”) for perfluorooctanoic acid (“PFOA”) and perfluorooctane sulfonic acid (“PFOS”) under the Safe Drinking Water Act (“SDWA”), while extending the compliance deadline from 2029 to 2031. EPA further announced it plans to rescind requirements in those regulations applicable to other PFAS and mixtures of certain PFAS in drinking water. The NPDWR consists of legally enforceable primary standards and treatment techniques that apply to public water systems and guide EPA’s enforcement of the SDWA. This announcement follows EPA’s April 28, 2025 press release outlining its priorities for PFAS enforcement, which included 21 actions EPA intends to take to address PFAS and “engage with Congress and industry to establish a clear liability framework that ensures the polluter pays and passive receivers are protected.”...