Public Disclosure Before Filing: How Everyday Business Activities Can Affect Patent Rights
By: Ramón Urteaga, Esq. of the PatentXL Law Firm
Developing a new invention often involves much more than laboratory research or engineering work. Inventors and businesses routinely discuss new technologies with investors, demonstrate products to potential customers, attend trade shows, publish technical papers, seek manufacturing partners, and promote products through websites and social media. These activities may be important for turning an invention into a successful business. They can also create unexpected patent consequences.
Patent rights depend heavily on timing. In the United States, the America Invents Act generally uses a first-inventor-to-file system, meaning that filing strategy can be critical when multiple parties are developing similar technologies. At the same time, 35 U.S.C. § 102 establishes rules governing prior art, including certain patents, publications, public uses, sales, and other disclosures, while also providing limited exceptions for certain inventor-originated disclosures.
As a result, a business may unintentionally disclose important technical information before filing a patent application and later discover that the disclosure may affect its ability to obtain patent protection.
The risk is particularly significant because a potentially relevant disclosure does not necessarily involve publishing a formal scientific paper. Depending on the circumstances, patent issues can arise from activities such as a product demonstration, conference presentation, public use, sale or offer for sale, website publication, social media post, or other activity that makes information or an invention available outside the appropriate circle of confidentiality.
The practical lesson is that patent strategy should be coordinated with business activities rather than treated as a separate process. Before an invention is demonstrated, published, commercialized, or otherwise disclosed, businesses should consider whether patent protection should be pursued first.
Why Timing Matters in Patent Protection
Under 35 U.S.C. § 102(a)(1), a person is generally not entitled to a patent if the claimed invention was patented, described in a printed publication, in public use, on sale, or otherwise made available to the public before the effective filing date of the claimed invention.
This means that the relevant question is not simply when an inventor developed the invention. Under the modern first-inventor-to-file system, an inventor generally cannot rely on having invented something first to overcome prior art simply by demonstrating an earlier date of invention. The effective filing date of the claimed invention is therefore critically important.
For businesses, this creates a practical challenge. An inventor may develop a new technology in January, demonstrate it to potential customers in March, present it to investors in April, publish a technical article in June, and only begin preparing a patent application in August. From a business perspective, these may appear to be ordinary development activities. From a patent perspective, however, the dates and circumstances of those activities may become extremely important.
A company that waits until after a public disclosure to consider patent protection may find that the disclosure has affected the availability or scope of patent rights. Although U.S. patent law provides limited exceptions for certain inventor-originated disclosures, businesses should generally avoid relying on those exceptions when filing before disclosure is reasonably possible.
What Counts as a Public Disclosure?
A common misconception is that something must be formally published before it can affect patent rights. That is not necessarily the case.
Section 102(a)(1) identifies several categories of prior art, including patents, printed publications, public use, sales or offers for sale, and inventions otherwise made available to the public. The precise legal analysis depends on the circumstances, but businesses should be particularly cautious about activities such as:
Public product demonstrations
Trade shows and industry conferences
Academic publications and presentations
Public websites and online technical materials
Social media posts containing technical information
Sales or offers for sale involving the invention
Public testing or use of the technology
Investor or customer presentations that are not adequately protected as confidential
The important question is not simply whether the business intended to "publish" the invention. Different activities can have different consequences under § 102, and even a commercial transaction may raise patent issues without publicly revealing every technical detail of the invention. That is why patent counsel should ideally be involved before an important public-facing or commercial event rather than after it occurs.
Product Demonstrations Can Create Patent Risks
Product demonstrations are a common source of potential disclosure problems. A company may want to demonstrate a prototype to prospective customers, distributors, investors, or strategic partners. Demonstrations can be particularly useful when the invention is easier to understand by seeing it operate than by reading a written description. However, a demonstration may disclose more than the company realizes.
For example, a company developing a new medical device might demonstrate a prototype that reveals:
A novel structural configuration
A particular operating sequence
A specialized mechanism
A previously undisclosed technical feature
If those features are visible or otherwise made available to the public, the demonstration may become relevant to later patent analysis. This does not mean every demonstration destroys patent rights. The circumstances matter, including what was disclosed, who received the information, whether the disclosure was public or confidential, and when the activity occurred. Nevertheless, businesses should not assume that a demonstration is harmless simply because the product is still a prototype.
Trade Shows and Industry Conferences
Trade shows create a similar issue. Businesses frequently use trade shows to generate publicity for new products before those products are commercially launched. A company may display a prototype, explain how the product works, distribute technical materials, or answer questions from attendees.
From a marketing perspective, this can be highly valuable. From a patent perspective, however, the company should determine in advance what technical information can safely be disclosed. A trade-show presentation can be particularly problematic when a company displays the invention in sufficient detail that members of the public can understand its technical features.
The risk is not limited to formal presentations. Posters, brochures, product displays, demonstrations, videos, websites accessible through QR codes, and conversations with attendees can all potentially contribute to what becomes publicly available. For this reason, companies preparing for a major industry event should consider conducting a patent review before finalizing their presentation materials.
Investor Presentations and Pitch Decks
Investor discussions require a somewhat different analysis. Businesses often need to explain their technology to potential investors, lenders, strategic partners, or acquisition targets. At the same time, a company may be reluctant to file a patent application before it has secured financing or confirmed that the technology is commercially viable.
The solution is not necessarily to avoid discussing the technology. Instead, businesses should carefully control what technical information is disclosed and consider whether the recipient is subject to an appropriate confidentiality obligation. A presentation to a prospective investor under an appropriate confidentiality agreement presents a different situation from posting the same technical information publicly on a company website.
However, businesses should not assume that every investor conversation is automatically confidential. The existence, scope, and enforceability of any confidentiality obligation can depend on the circumstances. A practical approach is to determine before the presentation what information actually needs to be disclosed and whether that information should first be protected through a patent filing.
Academic Publications and Scientific Presentations
Academic researchers and university spinouts face particularly important timing considerations. Scientific publications, conference abstracts, posters, dissertations, and oral presentations can contain detailed descriptions of an invention. Researchers may understandably want to publish quickly because publications can be important for academic advancement, funding, collaboration, and professional recognition. However, publication can also place technical information into the public domain.
The United States provides a limited grace period for certain inventor-originated disclosures made no more than one year before the effective filing date. Under 35 U.S.C. § 102(b)(1)(A), a qualifying disclosure made by an inventor or joint inventor, or by another who obtained the subject matter from an inventor or joint inventor, may be excepted from prior art.
That protection should not be treated as a substitute for filing before publication. One reason is that patent rights outside the United States can be significantly more sensitive to pre-filing disclosure. A disclosure that may be survivable under U.S. law can create serious problems for foreign patent protection.
For researchers pursuing international commercialization, the safest general strategy is therefore to evaluate patent filing before publication rather than assuming that a U.S. grace period will solve the problem.
Social Media, Websites, and Online Marketing
Modern businesses have another source of potential disclosure that did not exist in the same form for earlier generations of inventors: social media. A company may post photographs of a prototype on LinkedIn, Instagram, X, Facebook, or another platform. A marketing team may publish a product video. An engineer may write a technical blog post explaining how a new system works.
Once information is placed online, controlling its distribution can become difficult. Deleting a post later does not necessarily eliminate the potential patent issue. Screenshots, reposts, archives, and other copies may continue to exist. Businesses should therefore treat online technical content with the same caution they would apply to a formal publication.
Marketing teams do not necessarily need to understand patent law in detail. But they should know when a proposed post involves a new technical feature and have a process for obtaining appropriate review before publication.
Sales and Commercial Activity
Commercial activity can raise particularly complicated patent issues. The patent laws specifically identify sales and offers for sale among the activities that can be relevant to prior art under § 102(a)(1).
Importantly, the Supreme Court has held that an invention can be subject to the on-sale bar even when the transaction itself does not publicly disclose the details of the invention. In Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., the Court rejected the argument that the AIA eliminated the traditional on-sale bar simply because a sale or offer for sale was not publicly disclosing the invention. A company therefore should not assume that patent concerns begin only when a product is publicly demonstrated.
For example, a business may begin accepting orders for a product while the product is still being refined. It may negotiate a commercial agreement with a customer or begin supplying prototypes for commercial use. Depending on the circumstances, those activities may become relevant to patentability.
The legal treatment of sales and offers for sale can be highly fact-specific. Businesses should therefore consider patent protection before entering into significant commercial arrangements involving an invention that has not yet been the subject of a patent filing.
What About Confidential Disclosures?
Not every disclosure to another person is necessarily a public disclosure.
This distinction is important because businesses often need to share technical information before filing a patent application. A company may need to provide information to an employee, consultant, manufacturer, supplier, attorney, investor, or potential business partner. When the recipient is subject to appropriate confidentiality obligations, the disclosure may not be treated in the same manner as information that has been freely made available to the public.
However, businesses should not assume that a conversation is confidential simply because everyone involved understands that the technology is sensitive. The circumstances surrounding the disclosure matter, including who received the information, what confidentiality obligations applied, and whether the information was otherwise accessible to the public.
Companies should therefore establish appropriate confidentiality procedures for sensitive technical information. Depending on the circumstances, these measures may include:
Using nondisclosure agreements with appropriate recipients.
Limiting access to information based on business need.
Clearly identifying sensitive technical materials as confidential.
Maintaining records of who received confidential information.
The goal is to distinguish deliberate, controlled disclosures from information that has actually been made available to the public. This distinction can be particularly important when a company is attempting to preserve both patent rights and trade-secret protection.
The One-Year U.S. Grace Period: What It Does and Does Not Do
The United States has an important feature that distinguishes its patent system from many foreign systems: certain inventor-originated public disclosures may receive a one-year grace period.
Under AIA § 102(b)(1)(A), a disclosure made one year or less before the effective filing date may be excluded from prior art when the disclosure was made by the inventor, a joint inventor, or another person who obtained the disclosed subject matter directly or indirectly from an inventor or joint inventor.
Section 102(b)(1)(B) also provides an exception for certain disclosures made after an inventor-originated disclosure, where the subject matter of the later disclosure had previously been publicly disclosed by the inventor, a joint inventor, or another person who obtained the subject matter from the inventor.
These provisions can provide important protection when an inventor has already disclosed an invention before filing a patent application. However, the existence of a U.S. grace period does not mean that inventors should routinely disclose first and file later.
Relying on the grace period can create difficult evidentiary and strategic issues, particularly when there is a question about who made the disclosure, what subject matter was actually disclosed, or whether a later reference falls within the statutory exceptions. More importantly, the U.S. grace period does not provide equivalent protection for patent rights in every foreign jurisdiction. For businesses interested in foreign patent protection, filing before public disclosure is generally the safer strategy.
Why Foreign Patent Rights Make Early Filing Especially Important
A company may assume that because U.S. law provides a one-year grace period, it has plenty of time to file. That assumption can be dangerous for an internationally oriented business.
Many countries apply stricter rules concerning public disclosure before filing. In jurisdictions with limited or no applicable grace period, an inventor's own publication or public disclosure may prevent patent protection even if the disclosure occurred relatively shortly before the filing. This creates an important strategic distinction: a disclosure may be survivable under U.S. patent law but still jeopardize foreign patent rights.
Companies considering international commercialization should therefore evaluate patent protection before:
Publishing technical research.
Displaying a new invention publicly.
Launching a product or offering it for sale.
Presenting detailed technology at a conference or trade show.
Disclosing technical information through public marketing or social media.
Early filing can preserve patent rights and international filing options that may otherwise be lost. For companies that expect to seek protection outside the United States, coordinating patent filings with planned disclosures is therefore particularly important.
Public Disclosure Can Also Affect What Remains Patentable
The consequences of an early disclosure are not necessarily limited to whether a patent can be obtained at all. The content and timing of a disclosure can also become relevant to determining what aspects of a later-developed invention remain new and nonobvious.
For example, an inventor may publicly disclose a basic version of a technology and later develop an improved implementation. The later improvement may still be patentable if it represents a distinct and sufficiently inventive development. However, the earlier disclosure may become relevant to determining whether the improvement is new or would have been obvious in view of what was already known.
This issue can become particularly important when an invention develops incrementally. A company may initially disclose one version of a product, continue development, and later identify a technical improvement that provides a meaningful advantage. If the company has not carefully documented what was disclosed and when, it may become more difficult to determine which aspects of the later invention were already publicly known and which were developed afterward.
For this reason, companies should maintain clear records of technical development and public disclosures. A patent strategy should distinguish between information that has already been made publicly available and subsequent technical developments that may support additional patent protection.
Patent Filing Before Disclosure: A Practical Strategy
For many businesses, the simplest way to reduce disclosure-related risk is to establish a patent filing process that precedes major public commercialization activities. A company does not necessarily need to wait until the technology is completely finished before filing a patent application. In many situations, an appropriately prepared provisional patent application can establish an early filing date for the disclosed subject matter while allowing development and commercialization activities to continue.
However, a provisional application should not be treated as a placeholder containing only a vague description of the invention. The application should provide sufficient technical disclosure to support the subject matter for which priority is later sought. If important aspects of the invention are not adequately described in the provisional application, the applicant may not be able to rely on the provisional filing date for those later-claimed aspects. This makes the quality of the initial filing important. A useful internal process may look like this:
Identify potentially patentable developments.
Record when the invention was developed and who contributed to it.
Identify upcoming public disclosures or commercial activities.
Review the invention with patent counsel before those activities occur.
File an appropriate patent application when warranted.
Proceed with the planned business activity after the filing strategy has been addressed.
This approach allows patent strategy to become part of normal product development rather than an emergency response after a potentially damaging disclosure has already occurred.
Building Patent Strategy Into the Business Process
Companies do not need to stop marketing their products or communicating with customers to protect patent rights. Instead, they should establish a process for identifying patent-sensitive activities before they occur. Before a major public event or commercial activity, a business should consider asking:
Does the presentation disclose a new technical feature?
Has the relevant invention already been evaluated for patent protection?
Has a patent application been filed?
Will the disclosure include information that was not included in an earlier filing?
Are international patent rights important?
Are any third parties receiving the information under appropriate confidentiality obligations?
Is the company planning to sell or offer the product for sale?
These questions can often be addressed efficiently when patent counsel is involved early. The biggest problem is usually not the existence of the business activity itself, but discovering its potential patent implications only after the activity has occurred. Patent protection should therefore be integrated into the product-development process rather than treated as an administrative task that begins after a product has been developed or marketed.
For many businesses, an important patent decision may arise before a public demonstration, investor presentation, academic publication, trade-show appearance, product launch, or commercial sale. Identifying those events in advance gives the company an opportunity to evaluate whether a filing should occur first.
This is particularly important for companies pursuing international patent protection. Although U.S. law provides limited protection for certain inventor-originated disclosures, a disclosure that does not prevent a U.S. patent from being obtained may nevertheless jeopardize patent rights in other jurisdictions. For businesses developing new products and technologies, the practical lesson is simple: Think about patent protection before the invention leaves the company.
A well-coordinated IP strategy allows engineers, researchers, marketing teams, executives, and legal professionals to work from the same timeline. By identifying potentially patentable developments early and coordinating filings with publications, demonstrations, sales, and other public activities, companies can reduce avoidable risks and preserve more options for protecting the technology they have invested in developing.
If you’re interested in learning more about this topic or how the principles discussed in this article may impact your business, don’t hesitate to contact us at info@patentxl.com or at +1(610)871-2024.
