Invalidity dossier
US 5489773
Integrated portable device for point of sale transactions
Current assignee: Khyber Technologies Corp
Added 9/24/2026, 2:00:20 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 5,489,773 A
Title: Integrated portable device for point of sale transactions
Assignee/Original Assignee: Khyber Technologies Corp (per the supplied record; assigned via assignment from inventor Rajendra Kumar, recorded 1994-12-08)
Inventor: Rajendra Kumar
Key dates (as listed, and only as listed):
- Priority date: 1991-09-27 (flagged in the source as an assumption)
- Application no. US08/352,231; filing date: 1994-12-08
- Publication/grant date: 1996-02-06
- Anticipated expiration: 2013-02-06
- Legal status: Expired – Fee Related
Purpose and plain-language scope (from the supplied text):
The patent concerns portable, handheld data-collection devices, and more specifically a single integrated portable device for completing credit card sales transactions away from a conventional checkout register. According to the supplied definitions section, the invention "relates to devices which provide all functions necessary for processing a credit card sales transaction remote from a conventional checkout register." The enumerated functions are: a credit card reader, data entry keyboard, barcode scanner, display, receipt printer, transaction approval communicator, and a controlling processor. The background notes that data-collection devices whose primary or exclusive function is as a point of sale (POS) terminal are known and have "become quite sophisticated," though the provided excerpt cuts off mid-sentence.
Classification highlights: G07G5/00 (receipt-giving machines), G07G1/00 (cash registers), G06K7/10 family (optical/barcode reading, hand-held scanner construction), G06Q20/34 (payment architectures using cards), G07F7/08 and G07F7/10 (card-actuated apparatus; PIN/biometric coded signals). One classification entry, G06K7/109, concerns adapting a hand-held scanner for use as a fixed scanner.
Source: https://patents.google.com/patent/US5489773/en
What the supplied excerpt does not establish: It does not provide the claims, the detailed description, the drawings/figures, any prior-art references cited or distinguished, the examiner or examination history, the identity of any later assignee, or any information about enforceability, validity, infringement, or litigation. The priority date and legal status are expressly labeled in the source as assumptions, not legal conclusions. Any statement beyond the function list above would require the full patent text.
Generated 10/1/2026, 9:30:58 PM
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Litigation summary
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Proceedings on file (0)
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No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.