Wisconsin Archery Products LLC v. Garmin Intl Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Wisconsin Archery Products, LLC (Wisconsin)
  • Defendant: Garmin International, Inc. (Kansas)
  • Plaintiff's Counsel: Avek IP, LLC
• Case Identification: 2:24-cv-02076, D. Kan., 03/05/2024
• Venue Allegations: Venue is alleged to be proper in the District of Kansas because the defendant, Garmin, has its principal place of business in Olathe, Kansas.
• Core Dispute: Plaintiff alleges that Defendant's digital bow and crossbow sights infringe a patent related to auto-correcting bow sight technology.
• Technical Context: The technology concerns electronic archery sights that automatically calculate and display a corrected aiming point by measuring factors like distance to target and shot inclination.
• Key Procedural History: The complaint details a complex history between the parties, including a prior lawsuit filed against Garmin by a former exclusive licensee of the patent-in-suit, Burris Company, Inc. In response to that suit, Garmin filed an inter partes review (IPR) petition that resulted in the Patent Trial and Appeal Board finding the original claims unpatentable. Wisconsin Archery then initiated an ex parte reexamination, which resulted in the issuance of a reexamination certificate with new and amended claims, including the claim now asserted. The complaint argues the judgment in the prior Burris lawsuit is null and void and does not preclude the present action.

Case Timeline

Date	Event
2008-11-10	U.S. Patent 8,316,551 Priority Date
2012-11-27	U.S. Patent 8,316,551 Issue Date
2015-03-11	License Agreement between Wisconsin Archery and Burris Executed
2018-04-20	Prior Lawsuit Filed by Burris against Garmin
2018-05-29	Garmin Files IPR Petition against the '551 Patent
2018-12-11	USPTO Institutes IPR
2020-02-11	Wisconsin Archery Initiates Ex Parte Reexamination
2020-11-03	Reexamination Certificate for the '551 Patent Issued
2020-11-01	Approximate Launch of Accused Garmin Xero X1i Product
2024-03-05	Complaint Filing Date

II. Technology and Patent(s)-in-Suit Analysis

• Patent Identification: U.S. Patent No. 8,316,551, "Auto-Correcting Bow Sight," issued November 27, 2012 (as amended by Ex Parte Reexamination Certificate issued November 3, 2020).

The Invention Explained

• Problem Addressed: The patent's background section describes the difficulty archers face in accurately hitting a target due to dynamically changing factors like shooting distance, shot angle, and wind U.S. Patent 8,316,551 B2, col. 2:12-23 Traditional methods requiring manual estimation and compensation are slow and error-prone, potentially causing missed opportunities, especially in hunting scenarios U.S. Patent 8,316,551 B2, col. 2:7-11
• The Patented Solution: The invention is an integrated bow sight that automates this compensation U.S. Patent 8,316,551 B2, abstract It uses built-in sensors, such as a range finder and an inclinometer, to measure situational factors U.S. Patent 8,316,551 B2, col. 2:60-63 A processor uses this data to calculate a corrected aiming solution and displays a new, precise aiming point (e.g., an illuminated dot) for the archer, all while the bow can be at full draw U.S. Patent 8,316,551 B2, col. 2:50-56 This allows the archer to simply place the new aim indicator on the target and shoot, a concept the patent refers to as taking "dead aim" U.S. Patent 8,316,551 B2, col. 2:50-51
• Technical Importance: The technology aimed to significantly increase archery accuracy and speed by replacing manual, multi-step compensation with an integrated, automated "one-shot" solution Compl. ¶7

Key Claims at a Glance

• The complaint asserts independent claim 64, which was added during reexamination Compl. ¶28 Compl. ¶43
• The essential elements of claim 64 are:
  • A base supported on a bow.
  • A sensor system on the base to determine range to target and angle of inclination.
  • A display on the base including both a "targeting sight" defining a "default sighted-in position" and "multiple aim indicators" that can be selectively displayed based on sensor input.
  • A manually actuated input device, separate from the base, that allows an archer to initiate the evaluation of range and angle while the bow is in a fully drawn position.
• The complaint alleges infringement either literally or under the doctrine of equivalents and does not explicitly reserve the right to assert dependent claims Compl. ¶28

III. The Accused Instrumentality

Product Identification

• The complaint accuses the Garmin Xero A1, Xero A1i, and Xero A1 Pro bow sights (collectively, "Xero bow sights"), as well as the Garmin Xero X1i crossbow scope Compl. ¶26

Functionality and Market Context

• The accused products are described as digital archery sights with integrated laser rangefinders that provide angle-compensated distance measurements Compl. ¶33 Compl. ¶47 The complaint alleges these sights feature a display with illuminated LED pins or aim points that are projected based on the measured range and angle Compl. ¶37 Compl. ¶51
• The system is allegedly activated by a manually actuated trigger that can be mounted on the bow's grip, allowing the user to range a target and receive a new aiming point while at full draw Compl. ¶39 Compl. ¶40 Compl. ¶53 The complaint cites Garmin's marketing materials, which promote the products as having a "mounted digital laser range finder" Compl. ¶33

IV. Analysis of Infringement Allegations

U.S. Patent 8,316,551 Infringement Allegations (Xero A1/A1i/A1 Pro Bow Sights)

Claim Element (from Independent Claim 64)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a base that is supported on a bow incorporating the auto-correcting bow sight	The Xero A1 bow sight includes a base that mounts the sight to a bow. The complaint includes an image of the accused product showing a component labeled "base."	¶31	col. 7:4-7
a sensor system that is supportable on the base and that is configured to determine both of a range to a target and an angle of inclination of the bow	The Xero A1 bow sight is alleged to have a "mounted digital laser range finder" and to provide "precise angle-compensated distance."	¶33	col. 9:1-4
a display that is supported on the base and that includes a targeting sight...defining a default sighted-in position...and multiple aim indicators...selectively displayed based at least in part on both of the determined range to target and the determined angle of inclination	The Xero A1 includes a display with a "primary pin" that serves as the default sighted-in position and also displays "multiple LED pins" as aim indicators based on range and angle. An image from the complaint shows the product's display.	¶35; ¶37	col. 3:10-20
a manually actuated input device...configured to allow actuation...by an archer when the bow is in a fully drawn position	The Xero A1 includes a button-style input device that can be positioned on the bow's grip to be activated at full draw, initiating the range and angle evaluation. The complaint provides an image showing this detached trigger button.	¶39; ¶40	col. 16:10-14

U.S. Patent 8,316,551 Infringement Allegations (Xero X1i Crossbow Scope)

Claim Element (from Independent Claim 64)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a base that is supported on a bow incorporating the auto-correcting bow sight	The Xero X1i crossbow scope includes a base configured for mounting on a crossbow. The complaint provides an image of the scope showing a component labeled "base."	¶45	col. 7:4-7
a sensor system that is supportable on the base and that is configured to determine both of a range to a target and an angle of inclination of the bow	The Xero X1i is alleged to have a "mounted digital laser range finder" and provide "angle compensated distance."	¶47	col. 9:1-4
a display that is supported on the base and that includes a targeting sight...defining a default sighted-in position...and multiple aim indicators...selectively displayed based at least in part on both of the determined range to target and the determined angle of inclination	The Xero X1i display allegedly shows a "crosshair" as the default sighted-in position and also displays "multiple aim indicators" based on range and angle. A screenshot from a product video shows a display with various aim indicators.	¶49; ¶51	col. 3:10-20
a manually actuated input device...configured to allow actuation...by an archer when the bow is in a fully drawn position	The Xero X1i includes a trigger that can be mounted on the crossbow handle to be actuated while the crossbow is at full draw.	¶53	col. 16:10-14

• Identified Points of Contention:
  • Scope Question: A potential dispute may arise over whether the term "bow sight" as used in the patent can be construed to cover a "crossbow scope" Compl. ¶43 The patent specification repeatedly refers to "bow," "archer," and "fully drawn position" in the context of compound bows, and does not appear to mention or depict crossbows U.S. Patent 8,316,551 B2, col. 6:13-14 This raises the question of whether the patent's scope is limited to sights for vertical bows.
  • Technical Question: Claim 64 requires a "targeting sight...defining a default sighted-in position" in addition to "multiple aim indicators." What evidence the complaint provides that the accused products' "primary pin" or "crosshair" functions as a distinct, "default sighted-in" element as contemplated by the patent, rather than simply being one of several configurable indicators on a digital display, may become a point of contention.

V. Key Claim Terms for Construction

• The Term: "bow sight"

• Context and Importance: This term is critical because one of the accused products is a "crossbow scope" Compl. ¶26 The defendant may argue that the patent's claims are limited to sights for vertical bows, not crossbows, potentially placing the Xero X1i product outside the claim scope.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The plaintiff may argue that "bow" is a generic term for archery implements and that the inventive concept of automatic aim correction is equally applicable to both vertical bows and crossbows. The functional description in the claims is not explicitly limited to one type of bow.
  • Evidence for a Narrower Interpretation: The specification provides numerous examples and figures that exclusively depict a "compound archery bow" U.S. Patent 8,316,551 B2, col. 6:13-14 U.S. Patent 8,316,551 B2, Fig. 1 The term "crossbow" is absent from the specification, which could support an interpretation that the inventors did not contemplate or cover such devices.

• The Term: "targeting sight located on the display at a position defining a default sighted-in position"

• Context and Importance: Practitioners may focus on this term because infringement depends on finding this element as distinct from the "multiple aim indicators" in the accused products. The construction will determine whether a single, software-driven display that generates all visual elements can satisfy what may be argued are two distinct structural limitations.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The complaint alleges that a "primary pin" or "crosshair" satisfies this limitation Compl. ¶35 Compl. ¶49 This suggests an interpretation where any primary, user-referenced reticle for initial setup can be the "default sighted-in position."
  • Evidence for a Narrower Interpretation: The patent describes establishing this default position through physical hardware adjustments U.S. Patent 8,316,551 B2, col. 10:50-11:14 This could support an argument that the "targeting sight" must be a physically or structurally distinct element from the dynamically generated "aim indicators," rather than just another software-rendered graphic on the same display.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement, stating that Garmin instructs and encourages customers to use the accused products in an infringing manner through materials like owner's manuals Compl. ¶56 Specific citations to user manual instructions are provided to support the allegations of direct infringement, which also form the basis for the indirect claims Compl. ¶39 Compl. ¶53
• Willful Infringement: The complaint alleges willful infringement based on Garmin's pre-suit knowledge of the '551 patent Compl. ¶60 This allegation is supported by the extensive pre-litigation history, which includes Garmin's own petition for an inter partes review of the '551 patent, filed in 2018 Compl. ¶14

VII. Analyst's Conclusion: Key Questions for the Case

• Definitional Scope: A central issue will be one of claim construction: can the term "bow sight", which is described and depicted in the patent specification exclusively in the context of compound bows, be interpreted to encompass a "crossbow scope"? The resolution of this question will be determinative for the infringement allegations against the Garmin Xero X1i product.
• Procedural Preclusion: A threshold legal question will be the preclusive effect of the prior lawsuit and subsequent dismissal with prejudice involving the patent's former licensee, Burris. The court must decide whether that judgment, in a case where Wisconsin Archery was not a named party, bars the current infringement claims, as the complaint dedicates significant argument to why it should be considered "null and void."
• Functional Interpretation: A key evidentiary question will concern the interpretation of the claim limitation requiring both a "targeting sight... defining a default sighted-in position" and separate "multiple aim indicators". The case may turn on whether the accused products' software-driven displays, which generate a primary reticle and dynamic aiming points, meet the functional and structural requirements as defined by the patent's specification and claims.