Since 2009, millions of dollars have been spent worldwide on litigating smartphone-related patent infringement cases in the “Smartphone Patent Wars.” The most well-known of these battles includes ongoing litigation between Apple, Inc. and Samsung Electronics Co., the latest verdict handed down on February 26th, 2016.

The term “patent war” describes a setting involving considerable litigation surrounding a given patented technology, particularly technology in a competitive and emerging field. Patent wars are not a new phenomenon – the first notable patent wars were the Sewing Machine Wars of the 1850s. In 1846, Elias Howe Jr. received Patent No. 4,750 for a sewing machine implementing the lockstitch design.  Almost immediately Howe noticed seemingly infringing devices on store shelves. Howe attempted to license his patented technology to other sewing machine manufacturers, including Isaac Singer of Singer sewing machines. In cases where the manufacturer would not license his patent, Howe opted to file suit for infringement of his patent. Soon, other sewing machine manufacturers joined the action, until patent suits populated the dockets of multiple courts nationwide. Today, these trials might be considered the result of what is known as a “patent thicket”: an instance where patents have been issued to multiple entities for individual components of a single technology, creating a dense web of overlapping rights that forces manufacturers to license or infringe on one another to build a complete device.

Another instance of a patent war includes the controversy surrounding the telephone that occurred in the latter half of the 19th century. While Alexander Graham Bell is credited with the invention of the telephone (Patent No. 174,465), Bell was not the only person claiming inventorship of the telephone. Antonio Meucci and Daniel Drawbaugh both claimed to have invented the telephone before Bell, but lacked the financial resources to pay the application fee for a full patent. German inventor Johann Reis also claimed to be an inventor of the telephone, but never filed for patent protection. Credit could also be given to Elisha Gray, who alleged Bell was able to build a working model of a telephone (required by the Patent Office at the time) from information provided by Gray in the patent caveat. It is noted that Gray’s patent caveat and Bell’s application were filed on the same day, and that Bell submitted the working model nearly a month later. As Bell was able to build a working model before Gray, the associated patent rights ultimately were issued to Bell. Bell built a company around the telephone, a company that would be involved in dozens of patent suits and a considerable amount of telecommunications litigation throughout the 20th century.

Advancements in consumer usable electricity and the invention of the incandescent lightbulb also resulted in considerable litigation. Thomas Edison filed for his improvements to the light bulb in 1879 and received Patent No. 223,898 in 1880. This signaled the start of nearly a decade of litigation surrounding the light bulb. Edison was first sued for infringement by Joseph Swan for allegedly infringing Swan’s British patent—Swan and Edison settled the case and merged electric companies. In 1883, the United States Patent and Trademark Office (USPTO) declared Edison’s 1880 patent to be based on the work of William Sawyer. Undeterred, Edison continued to argue his case and, in 1889, convinced the courts that his specific improvements on the light bulb, which relied on the use of a carbon filament, were patentable. These improvements are the basis for the first commercial incandescent bulb, and contributed to Edison’s widespread notoriety.

In addition to the above, patent wars have also been waged in fields including the radio, the “horseless carriage” or automobile, the airplane, the laser, and the personal computer, among many others

The Sewing Machine Wars of 1856 resulted in the first recognized patent pool of Howe, Singer, and two additional competitors, called the Sewing Machine Combination. A “patent pool,” which is a tool in navigating a patent thicket, involves multiple patent holders cross-licensing their individual parts of a single technology to one another to prevent issues with infringement. Notable patent pools include the Manufacturer’s Aircraft Association formed during World War I; patent pools for the video coding standards MPEG-2, MPEG-4 Part 2, and H.264; and the Radio Frequency Identification (RFID) Consortium in the early 2000s. Patent pools are not a perfect solution, providing a unique challenge to antitrust enforcement. Still, patent pools are a viable response to the increased possibility for infringement created by the ease with which knowledge is disseminated in the digital age.

Despite the viability of patent pools, patent wars still exist. The ongoing Smartphone Patent Wars litigation between Apple, Inc. and Samsung Electronics Co. includes contested technology within multiple generations of the iPhone, iPad, and Galaxy phone and tablet product lines, such as the “slide to unlock”, “pinch to zoom”, and “universal searching” features.

The first US jury trial between the two tech giants in August 2012 resulted in a $1.049 billion verdict for Apple. In December 2012, it was determined a miscalculating of damages occurred, and the amount owed was re-calculated to $959 million in November 2013. A partial judgment in December 2015 resulted in Samsung agreeing to pay Apple $548 million–with one caveat. Samsung reserved “the right to reclaim or obtain reimbursement” of the $548 million depending on the holding of the Supreme Court (who agreed on March 21, 2016 to hear the appeal). This will be the first design patent case heard by the Supreme Court in over a century.

In April 2014, Apple filed a second US suit claiming approximately $2 billion in damages, which resulted in a jury trial verdict of $120 million for Apple and a $160,000 verdict for Samsung. On February 26, 2016, the US Court of Appeals for the D.C. Circuit overturned the April 2014 verdict, invalidated two of the three contested Apple patents (including the “slide to unlock” feature), and found Apple to be infringing on one of Samsung’s patents – a major victory for Samsung in the US courts.

Another US jury trial involving Apple suing Samsung was docketed for March 28, 2016. Samsung filed for, and was granted, a stay of this trial when the Supreme Court agreed to hear the Samsung’s appeal regarding the 2015 judgment of $548 million.

With the February 26, 2016 verdict and the upcoming Supreme Court battle, one might consider how the Smartphone Patent Wars litigation has affected the disputed technology to date. Overturning the 2014 verdict involved litigating technology that is two “generations” old. Additionally, when the Supreme Court considers Samsung’s appeals it will be weighing in on technology that is at least five generations old. With those perspectives in mind, it seems likely that the Smartphone Patent Wars have had some adverse effect on the state of smartphone technology.  On the other hand, it is difficult to quantify the amount of infringing activity that Apple was able stave off from other competitors due to Apple’s aggressive stance with Samsung.  In essence, the aggressive stance Apple has taken with Samsung may communicate a “line in the sand” to other smartphone makers.  It is also worth noting that as Apple filed suit after suit against Samsung, Samsung adjusted their UI technology so as to reduce the likelihood of future infringement, resulting in more diverse options for consumers. In addition, other companies in the smartphone space took efforts to release products with notable design differences from that of Apple’s protected products to ensure that they were not infringing on Apple’s patents.

Protecting an inventor’s right to exclude competitors from a particular technology space and incentivizing innovation represent the constitutional basis for awarding patents in the United States. While patent litigation helps to protect these goals of the US patent system, patent litigation may be harmful when in quantities that result in the designation of “patent war.” Using awarded patents as tools for continuous litigation in a patent war may stifle innovation, with time and money being spent on litigating the possibility of infringement instead of being spent on research and development.

On the other hand, the waging of a patent war by one company against another may aid in disincentivizing third party market entrants from infringing on the patent holders rights.  Patent wars may also have beneficial uses for companies. A group of manufacturers locked in a patent war may decide to form a patent pool, combining their protected technologies and creating a product greater than the sum of its parts. A patent war may effectively control the amount of competition in a shared market.

The effectiveness of a patent war ultimately depends on the companies involved and their litigation and/or product development efforts. As the battlefields of the Smartphone Patent Wars quiet down, it will be interesting to see which companies benefited and which companies were harmed by their chosen product development and litigation tactics.