By michael li
It could. Under U.S. patent law, a commercial offer for an invention that is ready for patenting can create an on-sale-bar problem before the first shipment. Whether it actually prevents protection depends on the transaction, the effective filing date of the claimed invention, and any applicable statutory exception.
An order is not automatically fatal. But “we haven’t delivered anything yet” is not a reliable reason to postpone the patent discussion.
A business may regard its first shipment as the moment a product reaches the market. By then, however, a customer may already have accepted an offer setting out the product, quantity, price and delivery terms.
For patent purposes, those earlier communications deserve attention. The on-sale inquiry concerns commercial sales or offers for sale, not simply the date a box leaves the warehouse.
Two questions sit at the center of the analysis: was the claimed invention the subject of a commercial sale or offer, and was it ready for patenting? Those questions require the actual transaction documents and the technical records available at the relevant time.
An invention can be ready for patenting without a working prototype. Sufficiently specific drawings or descriptions may establish readiness where they enable a person skilled in the field to practice the invention.
That does not mean every concept sketch qualifies. It means the absence of a finished sample does not settle the issue.
Consider a small hardware company developing an adjustable mounting bracket. Its engineers have completed drawings of the locking mechanism, but the factory is still making the tooling.
A distributor wants the first production run. The company sends a quotation identifying the bracket, price, quantity and delivery window; the distributor returns a purchase order. No units have been manufactured, and the parties expect delivery several months later.
The founder plans to address the U.S. patent application after the first sample arrives. That schedule assumes the unfinished tooling keeps the invention safely in development.
The assumption needs checking. The correspondence may already document a commercial transaction, while the engineering drawings may show that the relevant invention was ready for patenting before production began.
This is an illustrative scenario, not a client matter or reported dispute. Its point is to identify the records that need review, not to declare that the company's patent rights have necessarily been lost.
Start with both sides of the transaction. A company placing an order with its factory is not necessarily doing the same thing as accepting an order from its customer.
The following table is a screening guide, not a list of automatic legal outcomes. Contract terms and the technical substance matter more than the document's filename.
| Document or event | What needs checking | What not to assume |
|---|---|---|
| Early pricing discussion | Is this preliminary negotiation, or does the communication contain a commercial offer capable of acceptance? | Every mention of a price is a sale. |
| Formal customer quotation | What product and terms were offered, and what remained to be agreed? | Only the later purchase order can matter. |
| Customer purchase order | What earlier offer does it refer to, and what did each party accept or change? | The printed order date tells the whole story. |
| Deposit or first payment | Which transaction does it evidence, and when were the relevant commitments made? | No payment means there was no offer for sale. |
| Factory manufacturing agreement | Who owns the goods, what is the factory being paid to do, and may it market the product? | Every paid factory arrangement is a sale of the invention. |
| Drawings and development records | Did they disclose the claimed invention sufficiently, or were important technical questions still unresolved? | No prototype means the invention was not ready for patenting. |
| Invoice and shipment records | Do they document fulfillment of an earlier deal? | The delivery date starts the patent analysis. |
Preserve the original emails and attachments, including earlier quotations and revised specifications. A final invoice rarely explains which technical version was offered months before.
The patent professional also needs to know what the proposed claims will cover. A transaction involving one version of a product cannot be assessed properly by looking only at the name of a later version.
In Pfaff v. Wells Electronics, Inc., decided on November 10, 1998, the U.S. Supreme Court considered a computer-chip socket developed for Texas Instruments. The inventor had prepared detailed engineering drawings and sent them to a manufacturer before making and testing a prototype.
On April 8, 1981, Texas Instruments provided written confirmation of an earlier oral purchase order for 30,100 sockets. The order was filled in July 1981, after the manufacturer had developed the necessary tooling.
Pfaff filed his patent application on April 19, 1982. Under the pre-AIA statute applicable to the case, April 19, 1981 was the critical date for the one-year on-sale bar.
The July delivery did not save the patent. The Court found that the commercial-offer condition was satisfied before the critical date and that the drawings established readiness for patenting, even though the invention had not yet been physically made and tested.
The Supreme Court held the patent invalid and affirmed the appellate judgment. The lesson was not that taking an order always destroys patent protection; it was that waiting for manufacture or delivery can leave the relevant commercial activity unexamined.
Pfaff applied an earlier version of the law. For current AIA applications, the USPTO continues to use the commercial-sale-or-offer and ready-for-patenting framework, but the statutory wording, exceptions and effective-filing-date analysis must be considered under today's rules.
“The customer signed an NDA” does not end the inquiry. In Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., the Supreme Court held in 2019 that a commercial sale to a third party required to keep the invention confidential may qualify as an on-sale event under the AIA.
Confidentiality remains useful for protecting technical information. It is not a substitute for checking whether a commercial sale has occurred.
“We paid the factory, so the invention was already sold” can also be wrong. In its 2016 en banc decision in The Medicines Company v. Hospira, Inc., the Federal Circuit found that the particular manufacturing-service transactions did not trigger the pre-AIA on-sale bar.
The inventor's company retained title to the products, and the manufacturer had no right to market them. The court did not create a blanket exemption for suppliers; it examined what the parties had actually exchanged.
Those decisions address different situations. A customer buying the invention, a factory providing manufacturing services and an engineer receiving a confidential development brief should not be bundled together as “outside contact.”
Bring the earliest customer communications to the filing discussion, not just the latest product brochure. Include the quotations, purchase orders, payment records, factory terms and drawings that were current when the commercial discussions took place.
The timing check should address the claimed invention's effective filing date and any earlier application being relied on. A filing receipt for an earlier provisional is not enough on its own; the relevant subject matter must be supported in that application.
Current U.S. law provides limited one-year exceptions for certain inventor-originated disclosures, and the USPTO recognizes that certain inventor-originated sales may fall within them. That is not a universal promise that every applicant can safely trade for a year before filing, nor does a U.S. exception establish protection in other countries.
For the wider preparation process, see IPcrossark's U.S. utility patent application preparation guide. Its discussion of technical records, earlier filings and disclosure dates provides the broader context for this transaction-specific check.
For demonstrations and publications rather than sales activity, the related guide to U.S. patent novelty and the one-year grace period explains why the origin and content of a disclosure also matter. A product launch often produces several different events, each with its own records.
Yes. A commercial offer for sale can matter without completed payment or delivery, provided the other requirements are met. The communications need to be assessed as a transaction rather than reduced to the date money changed hands.
Not necessarily. Pfaff shows that sufficiently detailed drawings or descriptions can establish readiness for patenting. A genuinely unresolved technical concept presents a different factual question, which needs evidence of what was and was not complete.
No, not by itself. Confidentiality obligations can protect information, but Helsinn establishes that a confidential commercial sale may still qualify under the AIA.
No universal one-year safe period should be assumed. Any available U.S. exception depends on the statutory conditions, the origin of the relevant activity and the claimed invention's effective filing date; it also does not determine the position in other countries.
A properly prepared provisional may establish an earlier filing date for subject matter it supports, if the later application meets the benefit requirements. Filing one now does not erase an already applicable statutory bar, and an incomplete provisional should not be treated as protection for technical material added later.
IPcrossark's patent services include assistance with U.S. invention patent applications, searches and examination responses. For a product already being quoted or ordered, the first discussion should include the commercial timeline as well as the invention disclosure.
When contacting IPcrossark, provide the earliest relevant quotation, customer order, technical drawings, manufacturing terms and any earlier patent applications. These materials help identify questions that need to be resolved before choosing the filing steps.
The engagement should make clear who will assess any on-sale-bar issue, whether additional U.S. legal advice is needed, and which drafting, filing and review tasks are included. No application strategy can be promised to overcome an earlier transaction without examining the documents and applicable law.
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