November 3, 2025

Disaggregated LLMs and AI Gateways: How to Turn Infrastructure into Defensible IP

AI + IP INSIGHT

LLMs have outgrown monolithic stacks. Production teams are splitting inference into prefill and decode clusters to chase throughput and cost, while AI gateways mediate outbound agent traffic for security, observability, and spend control. These moves aren’t just operational choices, they create new, patentable control points and new IP risks. If your roadmap includes disaggregation, MCP-based tools, or agent governance, your IP strategy needs to evolve in lockstep.

This post translates those architecture shifts into practical IP actions you can take this quarter.

The new invention surface

1) Pipeline partitioning & orchestration

  • Request routing by workload class (prefill-heavy vs. decode-heavy).

  • KV-cache placement, transfer protocols, eviction policies, and latency-variance controls.

  • Schedulers that jointly optimize FLOPs, bandwidth, energy, and SLOs.

2) Memory & batching primitives

  • Paged/Radix attention variants and cache-governance that shrink tail latency.

  • Adaptive micro-batching that straddles prefill/decode across heterogeneous clusters.

3) Gateway policy & mediation

  • Prompt-aware rules, scoped credentials, budget guards, and multi-model routing.

  • MCP/A2A mediation layers that standardize tool permissions and audit trails.

  • Semantic caching, response normalization, and content-safety interposers.

4) Reliability, safety, and compliance

  • Human-in-the-loop circuit breakers for sensitive actions.

  • Data minimization and masking at the proxy layer.

  • Failure isolation across disaggregated microservices.

Each of these is a technical lever, the kind examiners look for when assessing novelty and non-obviousness. Don’t just claim “disaggregation” or “agent control.” Claim the mechanism.

Drafting for the realities of modern AI systems

Avoid divided infringement. Disaggregated stacks scatter steps across prefill, decode, and gateway components (and sometimes different vendors). Use system claims and carefully drafted method claims that anchor control at a single entity when possible.

Show enablement, not aspiration. Concretely describe:

  • Cache structures and transfer triggers, not just “efficient KV handling.”

  • Scheduling inputs (queue depth, token-rate forecasts, memory watermark) and outputs (placement decision, batch size).

  • Gateway decisions tied to observable signals (prompt class, model latency, cost ceilings).

Navigate §101 (software eligibility). Tie claims to measurable improvements in computer performance (e.g., reduced tail latency, bounded variance, fewer PCIe round-trips, energy-per-token), not business outcomes.

Mind open-source proximity. If you extend vLLM, SGLang, or TensorRT-LLM, document what your code does differently (e.g., a novel cache-eviction priority coupled to prompt entropy). Build a record to withstand obviousness over community baselines.

Patent vs. trade secret: a practical split
  • Patent the control planes: schedulers, cache-transfer protocols, policy engines, and safety interposers that are hard to keep secret once deployed or demoed.

  • Trade secret the tuning and ops playbooks: routing thresholds, cost models, incident runbooks, evaluator prompts, and datasets, provided you maintain confidentiality and access controls.

  • Contract the interfaces: MCP/A2A connector permissions, data-use restrictions, and audit obligations with vendors and internal platform teams.

A 30-day IP action plan for AI engineering leaders
  1. Map the architecture
    Draw the request path from user → prefill → KV handoff → decode → gateway → external API. Flag every decision point.

  2. Run an invention harvest
    Use prompts like:

    • What signal decided prefill vs. decode placement?

    • How do we bound KV transfer overheads under bursty traffic?

    • Which gateway rules prevented cost spikes or data exfiltration?

  3. Prioritize by “claim power”
    Score candidates on technical specificity, measurable effect, and detectability by others.

  4. Draft with experimental evidence
    Capture latency variance, throughput per watt, or cache-hit deltas before and after your mechanism. Charts make §101 and obviousness arguments easier.

  5. Harden secrecy where needed
    Lock down ops runbooks, evaluator prompts, and routing thresholds. Confirm NDAs and internal access controls actually match your “trade secret” intent.

  6. Pre-clear FTO
    Run a focused freedom-to-operate scan around disaggregation, attention paging, and AI gateways. Adjust designs early, not post-launch.

Common pitfalls we see
  • Vague claims that recite goals without the scheduler/cache mechanics.

  • DIY proxies published in talks or repos before filing, public disclosure kills foreign rights and can limit U.S. options.

  • Ignore contracts while perfecting patents: loose vendor terms can leak your secret sauce or complicate ownership of improvements.

Key takeaways
  • Disaggregation and AI gateways create new, defensible IP—if you capture the mechanisms, not just the outcomes.

  • Draft for enablement and single-actor control to sidestep divided infringement and §101 headwinds.

  • Split protection: patent control planes, keep ops playbooks secret, and tighten contracts at the interfaces.

  • Move now: public demos, conference talks, or OSS merges can forfeit rights.

At Wood IP, we translate complex, software-driven architectures into exam-ready, litigation-resilient claims and build complementary trade secret and contract strategies. As an SDVOSB, MBE boutique with 20+ years of patent experience across software, electronics, and life sciences, our team is built for the AI era.