8 F.4th 531
7th Cir.2021Background
- Life Spine developed the ProLift expandable spinal implant, patented and FDA‑approved; it treats degenerative disc disease and has precise component dimensions Life Spine treats as confidential trade secrets.
- Aegis (a U.S. distributor majority‑owned by L&K Biomed) signed a distribution agreement promising confidentiality, fiduciary custody of inventory, and not to reverse‑engineer or copy the ProLift; agreement contained a survival clause.
- Aegis showed the ProLift to surgeons and (without Life Spine’s consent) sent ProLift components/sets and a confidential installer photo to its parent L&K; L&K later developed the AccelFix‑XT, which the district court found essentially identical and compatible with ProLift tools.
- Evidence suggested L&K obtained ProLift testing data and used device access to copy key dovetail dimensions; design history files for AccelFix‑XT lacked documentation for the rapid redesign that produced near‑identical measurements.
- Life Spine sued for DTSA and Illinois trade secret misappropriation and breach of contract; after a nine‑day hearing the district court granted a preliminary injunction enjoining Aegis and partners from making, marketing, or obtaining IP on the AccelFix‑XT.
- The Seventh Circuit reviewed de novo legal issues and for clear error factual findings, and affirmed the preliminary injunction.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Trade‑secret status of ProLift specifications | ProLift’s precise dimensions, interconnectivity, static shear test data, and pricing are trade secrets because Life Spine took reasonable measures to keep them secret and they have economic value | Aegis: patenting, display, and sales put the ProLift specifications in the public domain so they cannot be trade secrets | Court: Whether the alleged secrets were publicly disclosed is a factual question; district court did not clearly err in finding the precise specs/testing/pricing were not publicly ascertainable and thus are trade secrets |
| Misappropriation by Aegis/L&K | Aegis breached confidentiality and fiduciary duties and passed confidential items to L&K, who used them to reverse engineer AccelFix‑XT | Aegis largely admitted L&K used shared info but contended the info was not confidential; disputed provenance of shipped devices/testing data | Court: Evidence supports that Aegis shared devices/data and that L&K derived AccelFix‑XT from that access; likelihood of misappropriation established |
| Breach of contract (confidentiality, fiduciary, anticopying, survival) | Distribution agreement barred disclosure, required fiduciary custody, and forbade copying; obligations survived expiration | Aegis: contract did not apply post‑expiration or to direct December 2018 purchases; federal patent law preempts anticopying restriction | Court: District court reasonably found breaches (including May/June 2018 shipments); preemption argument waived and meritless; survival/renewal issues not dispositive to injunction |
| Irreparable harm and balancing | Life Spine: loss of customers, market share, goodwill, and price erosion are hard to quantify so legal remedies inadequate | Aegis: alleged harms are quantifiable; district court improperly relied on presumption of irreparable harm | Court: Any presumption error was harmless—district court made independent findings of irreparable harm (lost customers/goodwill) and reasonably balanced harms and public interest |
Key Cases Cited
- Ruckelshaus v. Monsanto Co., 467 U.S. 986 (1984) (public knowledge defeats trade secret claim)
- BondPro Corp. v. Siemens Power Generation, Inc., 463 F.3d 702 (7th Cir. 2006) (patent publication can destroy trade secrecy where it covers the same subject matter)
- Rockwell Graphic Sys., Inc. v. DEV Indus., Inc., 925 F.2d 174 (7th Cir. 1991) (limited public disclosure does not automatically eliminate trade‑secret protection)
- 3M v. Pribyl, 259 F.3d 587 (7th Cir. 2001) (trade secret may exist in a novel combination of public elements)
- Learning Curve Toys, Inc. v. PlayWood Toys, Inc., 342 F.3d 714 (7th Cir. 2003) (existence of trade secret is a fact‑intensive inquiry)
- Roboserve, Ltd. v. Tom’s Foods, Inc., 940 F.2d 1441 (11th Cir. 1991) (extensive uncontrolled sales can destroy secrecy)
- Mays v. Dart, 974 F.3d 810 (7th Cir. 2020) (preliminary‑injunction likelihood‑of‑success standard clarified)
- eBay Inc. v. MercExchange, L.L.C., 547 U.S. 388 (2006) (no presumption of irreparable harm upon showing of IP violation)