Software can be one of a company’s most valuable assets. A unique program, algorithm, or technical process may give a business an advantage over competitors. But owning the code does not always mean you can patent it.
Under U.S. patent law, the code itself generally does not receive patent protection. Instead, a patent may protect the invention, method, or technical improvement the code implements. Whether your software qualifies depends on several legal requirements.
Can Computer Code Be Patented?
The short answer is no. You generally cannot patent the actual lines of source code or object code.
Copyright law can protect the code as creative expression. A patent is different. It may protect the underlying process, method, or technical solution that the software performs.
For example, software that simply automates a common business task may struggle to qualify for a patent. Software that improves how a computer processes data, increases hardware performance, or solves a specific technical problem may have a stronger case.
That distinction matters for companies that have invested heavily in software development. A competitor may write different code that performs the same function. Copyright protection may not prevent that independent development, while a valid patent can protect the claimed invention itself.
What Makes Software Eligible for Patent Protection?
Software must meet the same basic patent requirements as other inventions. The invention must be new, useful, and non-obvious. It also must qualify as patent-eligible subject matter.
Novelty means the invention cannot already be known or publicly disclosed in a way that defeats the patent claim. A prior art search can help identify patents, publications, and other technology that may affect your application.
Non-obviousness asks whether the invention would have been an obvious development to someone skilled in the field. A new combination of existing software features may not be enough if the solution would have been an expected step for a qualified software professional.
The invention must also have a practical use. A software invention should do something useful and produce a real-world result.
How Does the Alice Test Affect Software Patents?
Software patent applications also face the test established by the U.S. Supreme Court in Alice Corp. v. CLS Bank International. The test asks whether a patent claim is directed to an abstract idea, such as a mathematical concept or certain methods of organizing human activity.
If it is, the next question is whether the claim includes an inventive concept that applies the idea in a meaningful technical way.
Generic computer functions may not be enough. A stronger application explains the specific technical problem and how the software provides a technical improvement.
This is one reason patent drafting matters. The application needs to describe what the software does and how it solves a technical problem, not just a business goal.
What Types of Software May Qualify for Patent Protection?
Software may have a stronger patent case when it improves how technology works.
Examples include software that improves computer or hardware performance, creates a new data encryption method, processes images in a new way, or improves a manufacturing process.
The key question is not simply whether the software is useful. The question is what technical problem the invention solves and whether the solution is new and non-obvious.
What Types of Software May Not Qualify?
Software that performs a routine business function may face greater difficulty.
For example, automating a common financial transaction or organizing routine business information may not qualify when the software does not provide a meaningful technical improvement. Generic implementation of an abstract idea can also create problems under the Alice test.
That does not mean the software has no legal protection. Copyright, trade secret protection, contracts, and other forms of intellectual property protection may still matter.
How Do Patents Compare With Copyright Protection for Code?
Copyright protection generally applies to the actual expression found in source and object code. It can help prevent someone from copying the protected code itself. It does not generally give the owner control over the underlying idea or function.
A patent can provide broader protection when the underlying invention qualifies. A competitor may use different code, but if that code performs the patented method covered by valid patent claims, the competitor may still face infringement issues.
For many companies, the right answer is not choosing one form of protection. It may involve using several forms of intellectual property protection, depending on what the business owns and how it uses that property.
Should You File Before Disclosing Your Software?
Timing matters. Public disclosure can affect patent rights, so companies should consider patent protection before publicly releasing or discussing a new invention.
A prior art search can also help determine whether similar technology already exists. The earlier a company reviews these issues, the more informed its filing decision can be.
Companies should also consider who owns the software and whether employees, contractors, or outside developers contributed to its creation. Clear agreements can help establish ownership and protect confidential information.
For related guidance, see our previous article, Protecting Trade Secrets from Departing Employees.
What Should You Do Before Seeking Patent Protection?
Start by documenting how the software works, what technical problem it solves, and what makes the solution different from existing technology. Architecture diagrams, development records, test results, and technical descriptions can help explain the invention.
A prior art search can then help identify similar inventions and potential patent-eligibility issues. If the invention looks promising, a patent professional can help determine how to draft the claims and what filing strategy makes sense.
Businesses should also review their contracts and ownership records. For companies that rely on proprietary software, legal protection should fit into the broader plan for managing intellectual property and business risk.
For help with related business agreements, see our blog on How to Write a Binding Agreement.
General Counsel Consulting Solutions provides ongoing legal support to businesses that need experienced counsel without maintaining a full-time legal department. Early legal review can help a company identify intellectual property issues before they become expensive problems. Contact our team today to schedule your consultation.