1. Home
  2. |Insights
  3. |Recitation of Sufficient Structure May Overcome Means –Plus-Function Presumption

Recitation of Sufficient Structure May Overcome Means –Plus-Function Presumption

Client Alert | 1 min read | 02.06.08

The Federal Circuit, in TriMed, Incorporated v. Stryker Corporation (No. 07-1327; January 29, 2008), reverses a district court’s judgment of noninfringement based on a finding that the claim at issue contained a means-plus-function limitation. 

TriMed alleged that Stryker’s wrist fracture fixation devices infringed its patent whose only independent claim contains the limitation “said holes in said plate providing means for allowing the pin to slide axially therein but preventing compression across the fracture, and stabilizing said near end of the pin against displacement in the plane of the plate.” Stryker moved for summary judgment, alleging, inter alia, that this limitation is a means-plus-function limitation governed by 35 U.S.C. § 112 ¶6 and that this means-plus-function limitation is not present in the accused devices. Stryker asserted that the only structures corresponding to the claimed “means” disclosed in the specification of the patent were “hole[s] plus some other structure.” As the accused devices contain holes and nothing more, they do not infringe.

In reversing the district court’s judgment, the Federal Circuit panel observes that “the use of the word “means” in claim language creates the presumption that § 112 ¶6 applies” but also says that if a claim “recites sufficient structure for performing the described functions in their entirety, the presumption of § 112 ¶6 is overcome.” In concluding that the district court erred in concluding that the language at issue was means-plus-function language, the panel finds that “the claim articulates the structure for performing the claimed functions-the holes” and “[t]he claim language makes clear that the structure for performing these functions is the holes themselves.”

Insights

Client Alert | 8 min read | 10.01.25

BIS Issues “Affiliates Rule” to Dramatically Expand Applicability of Entity and Military End-User Lists

On September 29, 2025, the U.S. Department of Commerce Bureau of Industry and Security (BIS) announced a sweeping Interim Final Rule (IFR), (the “Affiliates Rule”) expanding which entities qualify as Entity List or Military End-User entities, thereby subjecting those entities to elevated export control restrictions under the Export Administration Regulations (EAR). U.S. export restrictions applicable to entities on the Entity List, Military End-User (MEU) List, and Specially Designated Nationals and Blocked Persons (SDN List) now apply to foreign affiliates that are, in the aggregate, owned 50% or more by one or more of the aforementioned entities. An entity that becomes subject to these restrictions because of its ownership structure will be subject to the most restrictive controls that attach to any of its parent entities, regardless of ownership stakes....