A Post-it note (or sticky note) is a small piece of
paper
Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, Textile, rags, poaceae, grasses, Feces#Other uses, herbivore dung, or other vegetable sources in water. Once the water is dra ...
with a re-adherable strip of glue on its back, made for temporarily attaching notes to documents and other surfaces. A low-
tack
Thermoproteati is a kingdom of archaea. Its synonym, "TACK", is an acronym for Thaumarchaeota (now Nitrososphaerota), Aigarchaeota, Crenarchaeota (now Thermoproteota), and Korarchaeota (now Thermoproteota), the first groups discovered. They ...
pressure-sensitive adhesive
Pressure-sensitive adhesive (PSA, self-adhesive, self-stick adhesive) is a type of nonreactive adhesive which forms a bond when pressure is applied to bond the adhesive with a surface. No solvent, water, or heat is needed to activate the adhesive ...
allows the notes to be easily attached, removed and even re-posted elsewhere without leaving residue. The Post-it's signature adhesive was discovered accidentally by a scientist at
3M.
Originally small yellow squares, Post-it Notes and related products are available in various colors, shapes, sizes and adhesive strengths. As of 2024, there are at least 28 documented colors of Post-it notes. 3M's Post-it has won several awards for its design and innovation.
Post-its are versatile and can be used in various settings for various purposes.
They are commonly used in classrooms and workplaces but can also be found in art, media, and social media.
Post-its have also been used as tools for public engagement and persuasion.
Although 3M's patent expired in 1997, the "Post-it" brand name and the original notes' distinctive yellow color
remain registered company
trademark
A trademark (also written trade mark or trade-mark) is a form of intellectual property that consists of a word, phrase, symbol, design, or a combination that identifies a Good (economics and accounting), product or Service (economics), service f ...
s, with terms such as "repositionable notes" used for similar offerings manufactured by competitors. While use of the trademark 'Post-it' in a representative sense refers to any sticky note, no legal authority has ever considered it a
generic trademark
A generic trademark, also known as a genericized trademark or proprietary eponym, is a trademark or brand name that, because of its popularity or significance, has become the generic term for, or synonymous with, a general class of products or ...
.
History

In 1968,
Spencer Silver, a scientist at 3M in the United States, attempted to develop a super-strong adhesive. Instead, he accidentally created a "low-tack", reusable,
pressure-sensitive adhesive
Pressure-sensitive adhesive (PSA, self-adhesive, self-stick adhesive) is a type of nonreactive adhesive which forms a bond when pressure is applied to bond the adhesive with a surface. No solvent, water, or heat is needed to activate the adhesive ...
for the aerospace industry.
For five years, Silver promoted his "solution without a problem" within 3M both informally and through seminars, but failed to gain adherents. In 1974, a colleague who had attended one of his seminars,
Art Fry, came up with the idea of using the adhesive to anchor his bookmark in his
hymn book.
Fry then utilized 3M's sanctioned "permitted
bootlegging" policy, which allows employees to spend some of their work time on projects of their own choosing, to develop the idea.
The original notes' canary yellow color was chosen by chance, from the color of the scrap paper available at the lab next door to the Post-it team. Fry provided 3M employees with a prototype of the product, and individuals started exchanging messages, demonstrating the product's communicative effectiveness.

3M
test marketed the product as a "Press 'n Peel" in stores in four cities in 1977, but results were disappointing.
A year later, 3M launched a massive marketing campaign known as the Boise Blitz.
This campaign involved renaming the product to "Post-it Note" and giving out free samples to offices in Boise, Idaho.
This time, results were promising as more than 90 percent of those who received free samples indicated they would buy the product.
Post-its were launched across the United States in 1980.
The following year, they were launched in Canada and Europe.
Post-it Flags were introduced as a new way to organize with color coding, filing and indexing.
In 1995, Post-it Easel Pads were introduced. The following year, Post-it Easel Pads for kids were introduced.
In 2003, the company introduced Post-it Brand Super Sticky Notes, with a stronger glue that adheres better to vertical and non-smooth surfaces.
In 2014, 3M released Post-it Super Sticky Dry Erase Surface, an instant dry erase surface that is stain-free and customizable to quickly fit on walls, cabinets, desks and more.

In 2018, 3M launched Post-it Extreme Notes, which are more durable and water-resistant and which stick to wood and other materials in industrial environments.
In 2019, the Post-it App was relaunched.
In 2020, 3M released the Post-it Flex Write Surface – a whiteboard surface that can be written on with dry erase and permanent markers without leaving stains behind when cleaned with water and soap. The company also released Post-it Foil Tabs, which were a revamp of the Post-it Tab with the purpose of satisfying the rise of personalization and bullet journaling trends of customers.
In 2021, 3M revealed a new logo and launched Noted by Post-it Brand – a collection of paper goods and desktop applications.
Awards and honors
The Post-it Note team received the internal 3M Golden Step Award in both 1981 and 1982 in recognition of their creation of a lucrative product that resulted in substantial new sales. Additionally, in 1981, they were honored with 3M's Outstanding New Product Award.
In 2010, the creators of the Post-it note joined the
National Inventors Hall of Fame
The National Inventors Hall of Fame (NIHF) is an American not-for-profit organization, founded in 1973, which recognizes individual engineers and inventors who hold a US patent of significant technology. Besides the Hall of Fame, it also operate ...
as a result of the widespread success of the Post-it note.
In 2019, the Post-it app was awarded 'Best of' App of 2019 by
Google Play
Google Play, also known as the Google Play Store, Play Store, or sometimes the Android Store (and was formerly Android Market), is a digital distribution service operated and developed by Google. It serves as the official app store for certifie ...
.
In 2021, the Post-it app won the Google Material Design Award within the motion category which awards apps that utilize unique design systems.
Silver and Fry both concluded their careers at 3M after achieving the highest accolades for their research and receiving numerous international engineering awards.
Competing claims
Alan Amron claimed to have been the actual inventor in 1973 who disclosed the Post-it note technology to 3M in 1974.
His 1997 suit against 3M resulted in a confidential settlement.
As part of the settlement, Amron agreed not to make future claims against the company unless the settlement agreement should be breached.
However, in 2016, he launched a further suit against 3M,
asserting that 3M was wrongly claiming to be the inventor, and seeking $400 million in damages. At a preliminary hearing, a
federal judge
Federal judges are judges appointed by a federal level of government as opposed to the state/provincial/local level. United States
A U.S. federal judge is appointed by the U.S. president and confirmed by the U.S. Senate in accordance with Arti ...
ordered the parties to undergo
mediation
Mediation is a structured, voluntary process for resolving disputes, facilitated by a neutral third party known as the mediator. It is a structured, interactive process where an independent third party, the mediator, assists disputing parties ...
.
The suit was subsequently dismissed, upholding the previous 1998 settlement.
In 1997, 3M sued
Microsoft
Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...
for
trademark
A trademark (also written trade mark or trade-mark) is a form of intellectual property that consists of a word, phrase, symbol, design, or a combination that identifies a Good (economics and accounting), product or Service (economics), service f ...
infringement for creating an electronic Post-it in Microsoft's Office 97 and using the term “Post-it” in a help file.
Types
Post-it Notes come in a variety of colors, collections, sizes, and rulings.
The original Post-it note color is Canary Yellow, the color of the notes when they were initially invented, and it remains one of the most popular colorways to this day.
All the notes are recyclable, but 3M has also introduced Greener Post-It Notes, which feature a 67% plant-based adhesive and recycled paper that uses no new trees.
Colors
* White
* Black
* Gray
* Red: Candy Apple Red
* Pink: Positively Pink, Papaya Fizz, Power Pink, Tropical Pink, Guava
* Blue: Fresh Mint, Blue Paradise, Aqua Splash, Sea Glass, Washed Denim
* Yellow: Canary Yellow, Citron, Sunnyside
* Purple: Iris Infusion, Moonstone
* Green: Acid Lime, Lucky Green, Limeade
* Orange: Vital Orange
Collections
* Beachside Café
* Oasis
* Summer Joy
* Simply Serene
* Supernova Neons
* Energy Boost
* Floral Fantasy
* Playful Primaries
* Wanderlust Pastels
* Poptimistic
* Sweet Sprinkles
*ButterScotch Yellow
Paper ruling
Post-it notes come in both lined and non-lined varieties, with the non-lined variant being the more common of the two.
Product variety
Varying types of Post-it notes are available on the market that vary in material, functionality, or stickiness.
The currently available varieties are listed: Super Sticky Notes, Extreme Notes, Greener Notes, Cube Notes, Recycled Notes, Pop-Up Notes, Assorted Shapes and Size Notes, Notes with a Tab
Dimensions
The typical Post-it is 3 inches by 3 inches, but a variety of sizes are now offered.
The currently available dimensions in inches include:1 x 1, 2 x 2, 2.8 x 2.8, 3 x 3, 3 x 5, 3.8 x 7.8, 3.9 x 2.9, 4 x 4, 4 x 6, 5 x 8, and 11 x 11.
Pads per pack
Post-its are sold in various quantities, ranging from smaller packs with 1 to 6 pads per pack and larger packs that contain from 12 to 36 pads per pack.
The currently available quantities are listed: 1, 2, 3, 4, 5, 6, 12, 14, 18, 24, 27, and 36 pads/pack.
Sheets per pad
The number of sheets per pad also varies, with the typical pad containing 100 sheets.
The available sheets per pad include: 30, 45, 50, 70, 75, 90, 100, and 400 sheets per pad.
Uses
Workspaces and the classroom

Post-it notes can be used in design teams to offer up personal ideas, assist in group activities like brainstorming, and support design thinking and design outcomes.
They offer a wide variety of advantages in a classroom—for instance, they are cost efficient, don't take time to set up, and are simple enough to be used by almost any age group. They have uses in concept mapping, labeling models, and more. They can also be used when explaining and teaching about broader terms like genetics.
They are used in the workplace both to convey information and to offer praise or words of encouragement. They can help boost communication between coworkers and can help communications between departments. They can also serve to praise people or tell them to keep up the good work.
They can be used to annotate textbooks in place of standard highlighting and sideline note-taking methods, allowing the pages to remain free of markings.
Additionally, Post-it notes can be used to visually guide students to important points in the textbook, helping them find information faster.
They are convenient for team exercises involving graphic organizers, such as a
fishbone diagram.
Students can easily collaborate on an organizer by each contributing one idea or clause on a Post-it.
Media
Post-its have appeared in a variety of movies and TV shows and are a widely used prop across different media channels.
In ''
Grey's Anatomy
''Grey's Anatomy'' is an American medical drama television series focusing on the personal and professional lives of surgical internship (medicine), interns, residency (medicine), residents, and attending physician, attendings at the fictional ...
'', the Post-it became an iconic symbol of commitment after
Meredith and
Derek used a blue Post-it to declare their wedding vows, a significant pop-culture moment. In season six of ''
Sex and the City
''Sex and the City'' is an American romantic comedy, romantic comedy-drama television series created by Darren Star for HBO, based on Sex and the City (newspaper column), the newspaper column and 1996 book by Candace Bushnell. It premiered in th ...
'', the Post-it was used to facilitate a breakup.
Post-it notes have appeared in episodes of various TV shows, including ''
The Office
''The Office'' is the title of several mockumentary sitcoms based on a British series originally created by Ricky Gervais and Stephen Merchant as '' The Office'' in 2001. The original series also starred Gervais as manager and primary charac ...
'', ''
Parks and Recreation'', ''
Being Mary Jane'', and ''
Doctor Who
''Doctor Who'' is a British science fiction television series broadcast by the BBC since 1963. The series, created by Sydney Newman, C. E. Webber and Donald Wilson (writer and producer), Donald Wilson, depicts the adventures of an extraterre ...
''.
Post-its have also appeared in films, including ''
Bruce Almighty'', ''
Ex Machina'', and ''
Romy and Michele's High School Reunion''.
Social media
On
Instagram
Instagram is an American photo sharing, photo and Short-form content, short-form video sharing social networking service owned by Meta Platforms. It allows users to upload media that can be edited with Social media camera filter, filters, be ...
, the hashtag “#postitnotes” contains over 242,000 posts.
The posts under this hashtag feature post-its as art mediums, bookmarks, flipbooks, and more.
Due to its collaborative use in the workplace, Post-its are commonly seen in
LinkedIn
LinkedIn () is an American business and employment-oriented Social networking service, social network. It was launched on May 5, 2003 by Reid Hoffman and Eric Ly. Since December 2016, LinkedIn has been a wholly owned subsidiary of Microsoft. ...
posts. One LinkedIn member posted about mapping the customer journey through Post-its with tips on involving different team members and organizational strategy.
Persuasion
As one of the top-selling consumer items on the market, Post-it notes may have a positive effect on how users take in the information presented on them. This is backed up by research that aimed to see just how helpful these small strips of paper can be to those who utilize them.
Art

"The Yellow Stickee Diary of a Mad Secretary", by Rosa Maria Arenas, is the mini
graphic journal of an office worker/artist, exhibited July 7 through August 25, 2013, at the Michigan Institute of Contemporary Art (MICA) Gallery in
Lansing, Michigan
Lansing () is the List of capitals in the United States, capital city of the U.S. state of Michigan. The most populous city in Ingham County, Michigan, Ingham County, parts of the city extend into Eaton County, Michigan, Eaton County and nort ...
. The 41 drawings displayed are a tiny percentage of the more than 2000 original drawings that constitute the Yellow Stickee Diary Project which Arenas created while working temp jobs from 1994 to 2005. Printed with archival inks on archival paper, the reproductions include "stickee sized" (3″ × 5″) framed prints and enlargements of the original drawings (which were all done on Post-it notes).
In 2012, Turkish artist Ardan Özmenoğlu was selected to have a solo exhibition at Bertrand Delacroix Gallery in the art district of
Chelsea, Manhattan
Chelsea is a neighborhood on the West Side (Manhattan), West Side of the Boroughs of New York City, borough of Manhattan in New York City. The area's boundaries are roughly 14th Street (Manhattan), 14th Street to the south, the Hudson River an ...
. The exhibition, titled "E Pluribus Unum" (Latin for "Out of many, one"), opened November 15, 2012 and featured large scale works on Post-it notes.
In 2004,
Paola Antonelli
Paola Antonelli (born 1963) is an Italian architect, curator, author, editor, and educator. Antonelli is the Senior Curator of Architecture and Design at the Museum of Modern Art (MoMA), New York, where she also serves as the founding Director o ...
, a curator of
architecture
Architecture is the art and technique of designing and building, as distinguished from the skills associated with construction. It is both the process and the product of sketching, conceiving, planning, designing, and construction, constructi ...
and
design
A design is the concept or proposal for an object, process, or system. The word ''design'' refers to something that is or has been intentionally created by a thinking agent, and is sometimes used to refer to the inherent nature of something ...
, included Post-it notes in a show entitled "Humble Masterpieces".
Rebecca Murtaugh, a
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
artist, who uses Post-it notes in her artwork, in 2001 created an installation by covering her whole bedroom with $1000 worth of the notes, using the ordinary yellow for objects she saw as having less value and
neon colors for more important objects, such as the bed.
In 2000, the 20th anniversary of Post-it notes was celebrated by having artists create artworks on the notes. One such work, by the artist
R. B. Kitaj, sold for £640 in an auction, making it the most valuable Post-it note on record.
The Lennon Wall, a message board created during the
2014 Hong Kong protests
A series of sit-in street protests, often called the Umbrella Revolution and sometimes used interchangeably with Umbrella Movement, or Occupy Movement, occurred in Hong Kong from 26 September to 15 December 2014.
The protests began after th ...
from a stretch of curved staircase in the
Central Government Complex
The Central Government Complex has been the headquarters of the Government of Hong Kong since 2011. Located at the Tamar, Hong Kong, Tamar site, the complex comprises the Central Government Offices, the Legislative Council Complex and the ...
, is covered in multi-colored Post-it notes with handwritten messages from supporters.
In 2011, at the Munich, Germany Apple store, a group of Apple fans paid tribute to
Steve Jobs
Steven Paul Jobs (February 24, 1955 – October 5, 2011) was an American businessman, inventor, and investor best known for co-founding the technology company Apple Inc. Jobs was also the founder of NeXT and chairman and majority shareholder o ...
by constructing a portrait of him out of 4001 Post-it notes.
The use of Post-its resembled
pixel art as each Post-it acted as a single pixel.
During the
COVID-19 pandemic
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...
, artist
Cauleen Smith created a video work featuring sticky notes called “Covid Manifesto.”
Smith used Instagram as a platform to engage with the social injustice posed by the pandemic.
Covid Manifesto is part of an online exhibit at the
Carnegie Museum of Art
The Carnegie Museum of Art is an art museum in the Oakland (Pittsburgh), Oakland neighborhood of Pittsburgh, Pennsylvania, United States. The museum was originally known as the Department of Fine Arts, Carnegie Institute and was formerly located ...
, which premiered on September 3, 2021.
Public engagement
In 2016, the day after the
US presidential election, artist Matthew "Levee" Chavez started a collaborative art project called "Subway Therapy".
Levee set up tables and chairs in
Union Square Station and invited commuters to express their thoughts and feelings on Post-it notes.
Most Post-it notes conveyed people's hopes and fears in response to the election.
The public contributed over 50,000 Post-it notes to the subway walls until the project was taken down on December 16, 2016.
The New York Historical Society preserved several thousand of the Post-it notes.
Sidewalks Labs, a Google-owned company that focuses on urban innovation, opened a public workspace in Quayside, Toronto, that supports public engagement in the city-planning process.
Plans are presented here and the public can freely share their ideas, opinions, and feedback on potential projects, often in the form of Post-it note annotations.
Post-it notes have also been used in museums to allow for more public interactivity and participation.
In 2016, at the
Minnesota History Center in St. Paul, Minnesota, the public wrote their reflections on the life of
Prince
A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. ''Prince'' is also a title of nobility (often highest), often hereditary, in some European states. The ...
on Post-it notes and posted them near the exhibit.
Some Post-it notes were archived by the museum to preserve the public sentiment expressed at the time.
Software implementations
Virtual Post-it notes have been created for
computer
A computer is a machine that can be Computer programming, programmed to automatically Execution (computing), carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic set ...
s in the form of
desktop notes. These include 3M's own Post-it Brand Software Notes,
Stickies in
macOS
macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...
,
or Sticky Notes in
Windows
Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
.
Notes
References
External links
* ''Acrylate-copolymer microspheres''
dhesive formula* ''Repositionable Pressure-Sensitive Adhesive Sheet Material''
heet materialPost-it homepage*
*
* Stavroula Karapapa, (2019)
Post-it note In: Claudy Op den Kamp and Dan Hunter (eds.), A History of Intellectual Property in 50 Objects, Cambridge University Press.
{{DEFAULTSORT:Post-it note
3M brands
American inventions
Paper products
Printing and writing paper
Products introduced in 1977
Stationery
Office equipment
Brands that became generic