You can't patent software.

Software can be patented — but abstract ideas cannot. The Supreme Court's Alice Corp. v. CLS Bank (2014) ruling made it significantly harder to patent software, but it didn't ban software patents. What Alice prohibits is patenting an abstract idea merely by saying 'do it on a computer.' Software that provides a concrete technical improvement — faster processing, better compression, a new method of error correction — remains patentable. Thousands of software patents are granted every year.

Filing a patent application immediately protects your invention.

Filing gives you a date — not rights. Only a granted patent gives you the right to exclude others. A filed but unexamined application gives you 'patent pending' status and a priority date. It does not give you any right to stop competitors. If a competitor copies your invention during the examination period (typically 2–3 years), you cannot sue them until — and unless — the patent is granted. And even then, damages may only run from the date they had actual notice of the published application.

A patent protects you from anyone copying your invention.

A patent gives you the right to sue — the USPTO won't enforce it for you. The US Patent and Trademark Office examines and grants patents. It does not police infringement. If a competitor copies your patented invention, the USPTO does nothing. You must file a lawsuit in federal district court, hire a patent litigator (typically $200–600/hour), and prove infringement yourself. Patent litigation averages $3–5M per side through trial.

The first person to invent something gets the patent.

Since 2013, the US awards patents to the first person to FILE — not the first to invent. The America Invents Act (AIA), signed in 2011 and effective for applications filed after March 16, 2013, switched the US from a first-to-invent system to a first-inventor-to-file system. The race is now to the patent office, not to the lab bench. If you invent something on Monday and your competitor files on Tuesday, they get the patent — even if you invented first.

A US patent protects your invention worldwide.

A US patent is only enforceable in the United States. Patent rights are territorial. A US patent gives you the right to exclude others from making, using, or selling in the US — and nowhere else. If you want protection in Europe, you need a European patent (via the EPO). In China, a Chinese patent. Each country's patent system is independent. A competitor can legally manufacture your patented invention in a country where you hold no patent and export it to third countries.

If something is online or published, your patent application will be rejected.

Prior art must be sufficiently enabling and public — but US law has a one-year grace period for YOUR OWN disclosures. Prior art is any public disclosure of your invention before your filing date. BUT: under US law (35 USC § 102(b)), if YOU disclosed your own invention (published a paper, gave a conference talk, posted on GitHub), you have a 12-month grace period to file before that disclosure counts as prior art against your own application. If a competitor independently discloses the same invention, there is no grace period.

Provisional patent applications are basically the same as regular patents, just cheaper.

A provisional application never becomes a patent and gives you zero enforceable rights. A provisional application (PPA) does one thing: establish a priority date and give you 12 months of 'patent pending' status. It is never examined, never published, and never granted. If you do not file a non-provisional (or PCT) application within 12 months that claims priority to the provisional, your provisional expires and is abandoned — as if it never existed. The priority date is lost.

A patent covers everything you've invented — not just what's in the claims.

A patent only protects what is specifically claimed. The specification describes; the claims define. The claims — the numbered sentences at the end of a patent — are the legally operative part. The specification (description, drawings, abstract) exists to support and explain the claims. If an embodiment of your invention is described in the specification but not captured in a claim, it is not protected. A competitor can freely copy a described embodiment that wasn't claimed.

You need a patent to start a business or protect your idea.

Patents are one IP tool among several — and often not the right one for early-stage companies. Many successful companies built their moat with trade secrets (Coca-Cola's formula), copyright (software code), branding (trademarks), or simply first-mover advantage and network effects. A patent requires disclosing your invention publicly in exchange for a time-limited monopoly. For some inventions — those that are easily reverse-engineered — a patent's disclosure may actually help competitors more than the temporary monopoly helps you.

Once a patent is granted, it lasts forever.

Utility patents expire 20 years from the filing date. After that, anyone can use the invention freely. A US utility patent expires 20 years from the earliest effective filing date (typically the non-provisional filing date). Additionally, the patentee must pay maintenance fees at 3.5, 7.5, and 11.5 years after grant — failure to pay causes the patent to expire early. Design patents last 15 years from grant (no maintenance fees). After expiration, the invention enters the public domain and anyone can use it without permission or payment.

Patent Literacy

10 Patent Myths — Debunked

Name: PatentBrief
Address: Phoenix, AZ, US
Price range: Free

These misconceptions are everywhere — in startup forums, AI chatbot answers, and even advice from well-meaning non-lawyers. Each one has cost real inventors real rights. Here is what the law actually says.

This page is educational, not legal advice. Patent law is fact-specific — consult a registered patent attorney for your situation.

#1
Myth
You can't patent software.
Reality
Software can be patented — but abstract ideas cannot.
The Supreme Court's Alice Corp. v. CLS Bank (2014) ruling made it significantly harder to patent software, but it didn't ban software patents. What Alice prohibits is patenting an abstract idea merely by saying 'do it on a computer.' Software that provides a concrete technical improvement — faster processing, better compression, a new method of error correction — remains patentable. Thousands of software patents are granted every year.
The nuance — The line is genuinely fuzzy. The USPTO's Alice/Mayo test asks (1) does the claim recite an abstract idea? and (2) does the claim add something 'significantly more' than that idea? A patent attorney can often draft claims that survive this analysis. Self-diagnosing 'my software is abstract' is one of the most common and costly inventor mistakes.
Patent Eligibility (§101) →
#2
Myth
Filing a patent application immediately protects your invention.
Reality
Filing gives you a date — not rights. Only a granted patent gives you the right to exclude others.
A filed but unexamined application gives you 'patent pending' status and a priority date. It does not give you any right to stop competitors. If a competitor copies your invention during the examination period (typically 2–3 years), you cannot sue them until — and unless — the patent is granted. And even then, damages may only run from the date they had actual notice of the published application.
The nuance — The priority date IS valuable — it establishes that you invented first for prior-art purposes. But 'patent pending' is a marketing signal, not a legal shield. Don't launch a product assuming a pending application will stop competitors.
How to File a Patent →
#3
Myth
A patent protects you from anyone copying your invention.
Reality
A patent gives you the right to sue — the USPTO won't enforce it for you.
The US Patent and Trademark Office examines and grants patents. It does not police infringement. If a competitor copies your patented invention, the USPTO does nothing. You must file a lawsuit in federal district court, hire a patent litigator (typically $200–600/hour), and prove infringement yourself. Patent litigation averages $3–5M per side through trial.
The nuance — Many inventors discover that their patent has been infringed but can't afford to enforce it. This is why small inventors sometimes license to larger companies or use NPE structures to fund litigation. A patent is only as powerful as your ability and willingness to enforce it.
Patent Infringement →
#4
Myth
The first person to invent something gets the patent.
Reality
Since 2013, the US awards patents to the first person to FILE — not the first to invent.
The America Invents Act (AIA), signed in 2011 and effective for applications filed after March 16, 2013, switched the US from a first-to-invent system to a first-inventor-to-file system. The race is now to the patent office, not to the lab bench. If you invent something on Monday and your competitor files on Tuesday, they get the patent — even if you invented first.
The nuance — The AIA does include a limited grace period: if you publicly disclosed your invention, you have 12 months to file without that disclosure counting as prior art against you. But your disclosure IS prior art against everyone else. Filing early is almost always the right strategy.
Novelty (§102) →
#5
Myth
A US patent protects your invention worldwide.
Reality
A US patent is only enforceable in the United States.
Patent rights are territorial. A US patent gives you the right to exclude others from making, using, or selling in the US — and nowhere else. If you want protection in Europe, you need a European patent (via the EPO). In China, a Chinese patent. Each country's patent system is independent. A competitor can legally manufacture your patented invention in a country where you hold no patent and export it to third countries.
The nuance — The Patent Cooperation Treaty (PCT) lets you file a single international application that preserves your rights in 150+ countries. But the PCT is a filing and examination system, not a grant — you still must enter each country's national phase and pay each country's fees to get actual protection there.
International Patents →
#6
Myth
If something is online or published, your patent application will be rejected.
Reality
Prior art must be sufficiently enabling and public — but US law has a one-year grace period for YOUR OWN disclosures.
Prior art is any public disclosure of your invention before your filing date. BUT: under US law (35 USC § 102(b)), if YOU disclosed your own invention (published a paper, gave a conference talk, posted on GitHub), you have a 12-month grace period to file before that disclosure counts as prior art against your own application. If a competitor independently discloses the same invention, there is no grace period.
The nuance — The US grace period does NOT exist in most other countries. If you publicly disclose your invention before filing anywhere, you may have permanently destroyed your patent rights in Europe, China, Japan, and elsewhere. File first, disclose second — always.
Novelty (§102) →
#7
Myth
Provisional patent applications are basically the same as regular patents, just cheaper.
Reality
A provisional application never becomes a patent and gives you zero enforceable rights.
A provisional application (PPA) does one thing: establish a priority date and give you 12 months of 'patent pending' status. It is never examined, never published, and never granted. If you do not file a non-provisional (or PCT) application within 12 months that claims priority to the provisional, your provisional expires and is abandoned — as if it never existed. The priority date is lost.
The nuance — Provisionals ARE useful — they let you establish a date quickly and cheaply while you refine your invention. But a poorly-written provisional that doesn't fully describe your final invention may not provide adequate priority date support. A rushed provisional can be worse than no filing.
Provisional vs Non-Provisional →
#8
Myth
A patent covers everything you've invented — not just what's in the claims.
Reality
A patent only protects what is specifically claimed. The specification describes; the claims define.
The claims — the numbered sentences at the end of a patent — are the legally operative part. The specification (description, drawings, abstract) exists to support and explain the claims. If an embodiment of your invention is described in the specification but not captured in a claim, it is not protected. A competitor can freely copy a described embodiment that wasn't claimed.
The nuance — This is why claim drafting is so important. Broad, well-drafted claims protect more. But claims must be supported by the specification (written description requirement) and must be novel and non-obvious. A single poorly-drafted claim can leave huge gaps in protection.
Anatomy of a Patent Claim →
#9
Myth
You need a patent to start a business or protect your idea.
Reality
Patents are one IP tool among several — and often not the right one for early-stage companies.
Many successful companies built their moat with trade secrets (Coca-Cola's formula), copyright (software code), branding (trademarks), or simply first-mover advantage and network effects. A patent requires disclosing your invention publicly in exchange for a time-limited monopoly. For some inventions — those that are easily reverse-engineered — a patent's disclosure may actually help competitors more than the temporary monopoly helps you.
The nuance — For hardware, physical products, and process innovations, patents often make sense. For software, where the product is the code and keeping trade secrets is practical, patents may be less valuable than the disclosure cost suggests. The right answer depends on your business model, competitive landscape, and enforcement budget.
Patent vs Trade Secret →
#10
Myth
Once a patent is granted, it lasts forever.
Reality
Utility patents expire 20 years from the filing date. After that, anyone can use the invention freely.
A US utility patent expires 20 years from the earliest effective filing date (typically the non-provisional filing date). Additionally, the patentee must pay maintenance fees at 3.5, 7.5, and 11.5 years after grant — failure to pay causes the patent to expire early. Design patents last 15 years from grant (no maintenance fees). After expiration, the invention enters the public domain and anyone can use it without permission or payment.
The nuance — This expiration mechanism is fundamental to the patent bargain: limited-time exclusivity in exchange for public disclosure. The expiration of key drug patents is why generic medicines exist. The expiration of foundational tech patents (RSA in 2000, PageRank in 2018) opened those algorithms to everyone.
Expired Patents →

Avoid the pitfalls

10 things that can kill your patent application →Patent basics in plain English →Check your idea's patentability →