Examination Delay Earns Patent Term Adjustment Only In One Application

30 June 2015 PharmaPatents Blog

In Mohsenzadeh v. Lee, the Federal Circuit affirmed the district court’s decision that the USPTO’s delay in issuing a Restriction Requirement in a parent application does not earn Patent Term Adjustment (PTA) for the ensuing divisional applications. Thus, while Mr. Mohsenzadeh’s parent application earned 1,476 days of “A Delay” for a late Restriction Requirement, his divisional applications did not.

The USPTO Delay At Issue 

The patents at issue are U.S. Patent 8,352,362 and U.S. Patent 8,401,963, directed to methods of transferring resources from one entity to another, and related methods. These two patents stemmed from divisional applications of U.S. Patent 7,742,984.

I first wrote about this case shortly after the complaint was filed, and then when the district court decision was issued. As I explained in those articles, the patent application that issued as the parent ‘984 patent (the “parent application”) was filed July 6, 2001 and issued June 22, 2010. The USPTO awarded 2,104 days PTA to the ‘984 patent, including 1476 days of “A Delay” for the USPTO’s failure to issue a first Office Action within 14 months of the application’s filing date.

The first Office Action issued in the parent application was a Restriction Requirement mailed September 21, 2006, 1476 days after 14 months after the application was filed. The patent applications that issued as the ‘362 and ‘963 patents were filed on January 8, 2010. The ‘362 patent was issued on January 8, 2013, and the ‘963 patent was issued on March 19, 2013. The USPTO did not award any PTA to those patents.

Mr. Mohsenzadeh argued that the PTA calculations for the ‘362 and ‘963 patents should include the 1476 days of USPTO delay in issuing the Restriction Requirement in the parent application, because it is that Restriction Requirement that necessitated the filing of the applications that issued as the ‘362 and ‘963 patents.

The District Court Decision

The district court granted summary judgment in favor of the USPTO (and against Mr. Mohsenzadeh) for two reasons. First, the court determined that the language of the PTA statute (35 USC 154(b)) “plainly and unambiguously” only provides for PTA for delays that occurred during prosecution of the application from which the patent issued. Alternatively, the court found that to the extent the language of the PTA statute is ambiguous, the USPTO’s longstanding interpretation of the statute as set forth in 37 C.F.R. §§ 1.702,1.703, and 1.704(c)(12), is “reasonable and entitled to some deference.”

The Federal Circuit Decision

The Federal Circuit Decision was authored by Judge Reyna and joined by Judges Moore and Schall.

The Federal Circuit focused on the plain language of the PTA statute, and quickly disposed of Mr. Mohsenzadeh’s arguments:

The language of the provision of the patent term adjustment statute at issue, 35 U.S.C. § 154(b)(1)(A), clearly shows that Congress intended delay in the prosecution of an application to be restored to a single patent, the patent issuing directly from that application. In other words, the term of any patent arising from a continuing application is not restored for delay in the prosecution of the parent patent’s application.

The Impact Of Patent Term Adjustment

The district court decision includes this chart comparing the enforceable patent terms of the patents at issue:


As reflected in this chart, even though all of the patents  had the same 20-year term, the ‘984 patent had a much longer enforceable term because of the PTA award and also because the divisional patents were filed several years later. Indeed, although the district court made note of it, the Federal Circuit did not comment on Mr. Mohsenzadeh’s decision to wait to several years after the Restriction Requirement to file the divisional applications.

Although this decision is not surprising, it does underscore the potential importance of which “invention” is elected for prosecution pursuant to a Restriction Requirement, especially one that is issued”late.” Often the first application in a family undergoes a longer prosecution than its divisional and continuation applications, creating the potential to earn significant PTA.

This blog is made available by Foley & Lardner LLP (“Foley” or “the Firm”) for informational purposes only. It is not meant to convey the Firm’s legal position on behalf of any client, nor is it intended to convey specific legal advice. Any opinions expressed in this article do not necessarily reflect the views of Foley & Lardner LLP, its partners, or its clients. Accordingly, do not act upon this information without seeking counsel from a licensed attorney. This blog is not intended to create, and receipt of it does not constitute, an attorney-client relationship. Communicating with Foley through this website by email, blog post, or otherwise, does not create an attorney-client relationship for any legal matter. Therefore, any communication or material you transmit to Foley through this blog, whether by email, blog post or any other manner, will not be treated as confidential or proprietary. The information on this blog is published “AS IS” and is not guaranteed to be complete, accurate, and or up-to-date. Foley makes no representations or warranties of any kind, express or implied, as to the operation or content of the site. Foley expressly disclaims all other guarantees, warranties, conditions and representations of any kind, either express or implied, whether arising under any statute, law, commercial use or otherwise, including implied warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall Foley or any of its partners, officers, employees, agents or affiliates be liable, directly or indirectly, under any theory of law (contract, tort, negligence or otherwise), to you or anyone else, for any claims, losses or damages, direct, indirect special, incidental, punitive or consequential, resulting from or occasioned by the creation, use of or reliance on this site (including information and other content) or any third party websites or the information, resources or material accessed through any such websites. In some jurisdictions, the contents of this blog may be considered Attorney Advertising. If applicable, please note that prior results do not guarantee a similar outcome. Photographs are for dramatization purposes only and may include models. Likenesses do not necessarily imply current client, partnership or employee status.

Related Services


Ten Minute Interview: M&A Challenges & Opportunities
23 November 2022
Sujata “Sue” Sachdeva and Koss Corp.
23 November 2022
Cannabis Company Cops to SEC Accounting Fraud Charges
22 November 2022
Legal News: Cannabis Industry
Foley Automotive Report
22 November 2022
Dashboard Insights
CLE Weeks
5-16 December 2022
Milwaukee, WI
Foley Sponsors Ernst & Young Entrepreneur of the Year® Program
1 December 2021 - 30 November 2022
Michigan and Northwest Ohio Region
2022 Distressed Investing Conference
28 November 2022
New York, NY
Meet and Greet and Panel Discussion with E. Martin Estrada and Cuauhtemoc Ortega
28 November 2022
Los Angeles, CA