Original record: US6477503B1. Source layer should trace back to USPTO/Google Patents.
Checking access
Today's builder card
Open Event Inventory
Active Reservation System for Venues & Events
Massive MarketPerfect Timing10x Better+4 More
This patent describes linking local database inventory (such as ticket pools or venue slots) to distributed reservation servers over the web, preventing double-bookings. The core synchronization protocols are now public, freeing builders to coordinate local activity graphs.
Subscriber Exclusive
Join Pro Complete builder briefs are exclusive to premium subscribers.
Upgrade your plan to access full keyword history, strategic position roasts, and auto-generated boilerplate prompts.
Source-backed trend
This demand signal is waking up
Verified observations show a rising demand signal. That is the builder window: early enough to move, visible enough to matter.
8
Verified points+280%
Signal liftChecking
Data statusTrend provider: Checking source-backed trend data...
Forecast: source-only
Builder window
Source-backed lift
Channel Breakdownsource-backed
Search demand8 pointsTrend provider
Patent sourceUS6477503B1Source link attached
Social chatterLockedConnect a social trend source before showing this.
Key IndicatorsExploding
Growth modeExplodingComputed only from verified monthly observations.
Best angleActive Reservation System For Venues & EventsBuilder demand angle
ForecastSource onlyNo extrapolated forecast is shown until provider data supports it.
Patent Knowledge Base
Understand the patent before you build
Each daily opportunity needs a compact knowledge layer: the primitive, the wedge, the buyer, and the safety framing. This is the bridge between a patent record and an AI Studio prompt.
The first prototype should be demoable in a single AI Studio session, not a full legal review.
Use this as the first audience filter when deciding whether Open Event Inventory belongs in the daily feed.
To prevent double-bookings, ensure database bookings are wrapped in strict ACID transactions or atomic Redis locks.
Idea scanner
Get a Report Exactly Like This for Your Idea
Have your own business idea? Our idea scout checks the best patent angles and turns the result into a build card.
Opportunity
9Exceptional
Problem
10Severe Pain
Feasibility
9Seamless
Why Now
9Perfect Timing
Business Fit
Revenue Potential$1M-$10M ARR potential...
Execution DifficultyHigh-compliance setup & operations...
Go-To-MarketClear traction with strong target audience...
Right for You?
Start Building
Copy the build card, open Google AI Studio, and start with the smallest useful prototype. Other tools can come later.
Developer Deep-Dive
Commercialization Ladder
Proposed Value Ladder
Lead MagnetFree
Open Feasibility Calculator
An interactive diagnostic tool providing users with a custom feasibility and viability score.
Frontend$9.99/mo
Basic Open Event Inventory Monitoring API
A simple subscription tier exposing standard integration connectors, alerts, and basic reporting dashboard.
Builder+$19.99/mo
Advanced Open Event Inventory Control
Our flagship tier providing full multi-tenant workspace isolation, deeper analytics, and custom webhooks.
1. What Expired
Active online synchronization of database slot inventory to prevent double-booking locks.
2. Why It Mattered
It kept real-time transactional slot booking databases under license, forcing community centers and sports clubs into closed booking providers.
3. What Changed After Expiration
The active reservation replication patent is expired. Independent clubs can build open booking platforms without paying high monthly commission fees.
4. What Can Be Built Day 1
- Court slot calendars for community sports clubs
- Banquet and private room booking systems for restaurants
- Public city park permit slot managers
- Ticket inventory APIs for local tournament organizers
5. Open Source Tools to Use
Cal.com APIRepo
Open-source scheduling infrastructure for developers.
6. Companies that Benefited
Eventbrite CourtReserve ClubEssential Mindbody
Voice of Customer
Customer & Developer Insights
Analysis of customer reviews and developer pain points highlights opportunities to construct a high-converting competitor.
Pain Points
API Lock-inhigh
Existing platforms owned by Cylink Corporation / Stanford Joint Group block third-party integrations, forcing users to use legacy dashboards.
"We are locked into their platform. No open API access, no developer documentation."
High Sync Latencyhigh
Status updates experience a 10-15 minute sync delay, causing customers to contact support anyway.
"When technicians update progress, the client doesn't see it for 10 to 15 minutes."
Excessive Pricingmedium
Fixed monthly pricing is prohibitive for small teams and seasonal operations.
"We are paying over $300/month per active location... no usage-based tier."
Opportunities
Webhook First OShigh
Build a developer-friendly tracking engine featuring immediate integrations (Zapier, Make).
"A developer-first status tracker with day 1 webhook support would win easily."
Edge status brokerhigh
Provide sub-100ms update propagation running on edge workers (Cloudflare/Vercel).
"If someone updates the status, the client should see the change instantly."
Usage-based tiersmedium
Structure pricing around active tracking sessions rather than seats, accommodating seasonal fluctuations.
"We need a usage-based tier, so we pay based on our active jobs, not flat seats."
Technical Specifications
Patent Source & Authorship
Patent Number: US6477503B1
Assignee: Cylink Corporation / Stanford Joint Group
Filing Date: 1998-05-15
Grant Date: 2002-11-05
Inventors: Stanford Technology Labs
Status: Expired - Lifetime Limit
Official Abstract Snippet
No description available.
Developer WorkaroundsView Resource View Resource View Resource
Open-Source Alternatives
Open-Source Web Sockets Protocol
Direct real-time duplex data streams between clients and hosts avoiding centralized processing queues.
Decentralized Database Sync (US5983227A - Expired)
Filing date 1996. Expired database routing technique for network synchronization load balancing.
Client-Side HTTP Long-Polling Heuristics
Standard REST APIs using periodic axios requests to query backend databases on demand.
Build Path
Adjacent Build Ideas
1
Pickleball court reservation calendar tool
Start narrow, validate demand, and keep patent review separate.
2
Private dining room inventory manager
Start narrow, validate demand, and keep patent review separate.
3
Public facility permit booking portal
Start narrow, validate demand, and keep patent review separate.
4
Decentralized event ticket pool aggregator
Start narrow, validate demand, and keep patent review separate.
Interactive Laboratory
Interactive Workaround Playground
Explore the codebase sandbox, customize the application stack, and simulate one-click deployments to local subdomains.
Customizer
AI MVP Compiler
System Prompt
Choose AI Tool
You are helping me build from a PatentJoy opportunity. Use simple words. Assume the builder does not know patents. Be practical, specific, and honest about legal uncertainty. ## SOURCE IDEA - Product idea: Open Event Inventory - Plain-English source: Active Reservation System for Venues & Events - Patent record: US6477503B1 - Active Reservation System - Source URL: https://patents.google.com/patent/US6477503B1/en - First audience: Real-Time Systems - Builder wedge: Describes replicating a venue's local inventory database to an online active reservation server, managing distributed slots. Expiration opens event databases. - Why now: The patent record points to an old workflow that can now be rebuilt faster with modern software and AI tools. - Suggested stack: Redis transactional locks, Next.js calendar widget, Supabase DB schemas - Safety note: Research only, not legal advice. Check patent status, related patents, trademarks, and local rules before selling anything. ## TASK Create: Landing Page Goal: A page people understand Build a complete landing page for this startup idea. ## PAGE STRUCTURE ### 1. Top of the page - Big headline: Open Event Inventory - Short explanation: Describes replicating a venue's local inventory database to an online active reservation server, managing distributed slots. Expiration opens event databases. - Main button: "Start Building" - Second button: "View Source" - Show a simple product preview so the idea feels real. ### 2. Problem - Explain the annoying thing people deal with today. - Use 3 short bullets. - Do not use patent words like "claims" or "embodiments" in this section. ### 3. Solution - Explain how this product fixes the problem. - Show the flow in 3 steps: 1. User brings the messy situation. 2. Product turns it into a clear action. 3. User gets a faster, calmer result. ### 4. Proof - Add 3 proof cards: - Why this is timely. - Why builders can make it now. - Why customers might care. - Include this source line in small text: "Inspired by public patent research: US6477503B1." ### 5. Offer - Offer a simple waitlist or demo request. - Keep the first version small enough to build in one weekend. ### 6. FAQ - What is this? A startup idea inspired by public patent research. - Is this legal advice? No. It is only research and product brainstorming. - Can I sell it right away? Do not assume that. Check patent status, related patents, trademarks, and local rules first. ## STYLE Light, clean, Apple-like, mobile-friendly. Short words. No filler. No legal overclaiming.