The Kodak v. Polaroid patent lawsuit was a fifteen-year fight that began in 1976, when Polaroid accused Eastman Kodak of copying the technology behind its instant cameras and film. Polaroid won. Kodak was permanently barred from the instant photography business in 1986 and ordered in 1991 to pay roughly $924.5 million, the largest patent infringement award in history at the time.
Why Polaroid Sued Kodak in 1976
Polaroid had spent nearly three decades building a patent wall around instant photography. By the mid-1970s the company held patents on the chemistry that let a photograph develop itself and on the mechanical systems inside the camera that made the process work. Its engineers had deliberately patented not just their preferred designs but alternative approaches too, making it hard for anyone else to engineer around them.
In 1976, Eastman Kodak launched its own instant photography line: the EK4 and EK6 cameras and PR-10 instant film. Kodak had the manufacturing scale, retail relationships, and brand recognition to challenge Polaroid directly.
Polaroid filed suit in the U.S. District Court for the District of Massachusetts on April 26, 1976, alleging that Kodak’s cameras and film infringed twelve Polaroid patents covering both the hardware and the self-developing film chemistry.1Justia Case Law. Polaroid Corp. v. Eastman Kodak Co., 641 F. Supp. 828 (D. Mass. 1985) The complaint was filed within weeks of Kodak’s product launch.
What Each Side Argued
Polaroid’s case rested on specific innovations, not vague concepts. The patents at issue covered the polymeric acid layers that controlled development timing, the dye developers that produced the image, the opacifying layers that shielded film from light during processing, and the mechanical systems that ejected film from the camera.
Kodak defended on two fronts. It argued that its products were the result of independent research and represented genuinely different engineering solutions. It also attacked the patents themselves, arguing that several were invalid because the underlying inventions were obvious given existing technology, or because Polaroid had failed to disclose relevant prior art during the application process. If enough patents fell, the infringement claims would collapse even if the products looked similar.
The case was tried without a jury. Expert witnesses testified about the molecular structure of dye developers, the behavior of polymeric acids, and the mechanics of film ejection systems. It required deep engagement with organic chemistry and precision engineering.
The 1985 Ruling
On September 13, 1985, the court found that Kodak had infringed seven of Polaroid’s patents.2Justia Case Law. Polaroid Corporation v. Eastman Kodak Company, 789 F.2d 1556 (Fed. Cir. 1986) The infringed patents covered the heart of instant film technology and key camera mechanisms:1Justia Case Law. Polaroid Corp. v. Eastman Kodak Co., 641 F. Supp. 828 (D. Mass. 1985)
- The polymeric acid layer (U.S. Patent No. 3,362,821), which controlled the timing of chemical development inside the film.
- The negative dye developer (U.S. Patent No. 3,245,789), which governed how dyes migrated to form the image.
- Two opacifying layer patents (U.S. Patent Nos. 3,594,165 and 3,689,262), which shielded the developing image from ambient light so the film could process outside the camera.
- Symmetrical supports (U.S. Patent No. 3,578,540), covering the structural design of the film unit.
- The rear pick mechanism (U.S. Patent No. 3,753,392), covering how the camera grabbed and ejected film.
- The light shield deflector (U.S. Patent No. 3,810,211), which protected the film as it exited the camera body.
Kodak’s PR-10 film depended on the same chemical processes Polaroid had pioneered, and the court found Kodak had not engineered around them in any meaningful way.
Kodak did win on some patents. The court found three invalid as obvious in light of prior art: the Campbell patent (No. 3,761,269), the detachable spread roller housing patent (No. 3,810,220), and a rear motor and gear train patent (No. 3,709,122). A fourth, the mordant patent (No. 3,770,439), was held valid but not infringed because Kodak’s film used a different chemical structure. Those wins did not change the outcome. The patents that mattered most all went Polaroid’s way.
The Injunction That Shut Down Kodak’s Instant Business
The court issued a permanent injunction effective January 9, 1986, barring Kodak from manufacturing or selling any instant cameras or film.2Justia Case Law. Polaroid Corporation v. Eastman Kodak Company, 789 F.2d 1556 (Fed. Cir. 1986) Kodak asked the Federal Circuit to stay the injunction pending appeal. The motion was denied later that month. The shutdown was immediate and total.
Overnight, Kodak had to dismantle a product line that had been on the market for a decade. Plants closed. Employees lost their jobs. And millions of customers were left holding cameras that would soon have no film available.
Kodak announced a consumer exchange program in January 1986, offering owners of its instant cameras three options: a Kodak disc camera with two rolls of film (worth about $50), a $50 rebate book toward any Kodak product, or one share of Kodak stock, which was then trading around $48.63. In 1988, a class-action settlement covering 3.4 million U.S. owners of the discontinued cameras was approved, with each owner receiving between $50 and $70 in cash and coupons. Kodak valued the settlement at $150 million.
The $924.5 Million Damages Award
With the injunction in place, the case entered a second phase to determine what Kodak owed. Polaroid initially demanded $12 billion. Five more years of litigation followed.
The dispute came down to how to measure Polaroid’s loss. Polaroid argued that every Kodak sale was a sale Polaroid would have made, entitling it to the full profit it had lost. Kodak pushed for a reasonable royalty instead, essentially the price of a license had one been negotiated before it entered the market.
In 1991, the court awarded Polaroid approximately $454 million in lost profits plus $455 million in interest, totaling about $909 million. Post-judgment interest and corrections to calculation errors brought the final amount to $924.5 million.3Justia Case Law. Polaroid Corporation v. Eastman Kodak Company, 867 F.2d 1415 (Fed. Cir. 1989) At the time, it was the largest patent infringement award ever handed down.
How the Case Changed Patent Law
Two things about the outcome shaped patent litigation for decades.
The scale of the damages award sent a message that infringing a competitor’s patents was not a manageable cost of doing business. Some companies had treated infringement as a calculated risk before this case, something to be litigated and settled for an absorbable sum. A nearly billion-dollar judgment changed that math. Patent clearance before product launches became a serious line item, and licensing negotiations that companies had brushed off suddenly looked like bargains.
The automatic injunction did damage that money alone could not have done. The court did not just award damages; it shut down Kodak’s entire instant photography division permanently. For roughly two decades after, courts in patent cases routinely granted permanent injunctions to prevailing patent holders, following the principle that the right to exclude others is the core of what a patent provides.
That approach held until 2006, when the Supreme Court’s decision in eBay Inc. v. MercExchange changed the standard. Patent holders are no longer automatically entitled to an injunction. They must satisfy a four-part test showing irreparable injury, that money damages are inadequate, that the balance of hardships favors an injunction, and that the public interest supports it. A case like this one might still produce an injunction under the eBay standard because Polaroid was a direct competitor, but the automatic nature of the remedy is gone.
What Happened to Both Companies
The outcome was ruinous for Kodak in the short term. Between the $924.5 million judgment, the $150 million consumer settlement, lost revenue from a shuttered product line, and the litigation costs themselves, the financial damage was severe.
Winning did not save Polaroid either. The lawsuit consumed management attention and legal resources for fifteen years. During that same period, digital photography was emerging as a technology that would make both instant and traditional film obsolete. Polaroid received its judgment in 1991, and for a few years the cash looked like vindication. In 2001, Polaroid filed for Chapter 11 bankruptcy, its core instant photography business gutted by the shift to digital.
Kodak followed a similar arc on a longer timeline. The company that once employed more than 145,000 people and dominated the global film market filed for Chapter 11 bankruptcy on January 19, 2012, citing declining sales as consumers abandoned film for digital cameras and smartphones.4SEC. Eastman Kodak Company 10-K Annual Report
Polaroid won every legal battle in the case and collected every dollar it was owed. The technology those patents protected was already becoming obsolete while the lawyers were still arguing about damages.