Protecting Geothermal Reservoir Data as a Confidential Corporate Asset in the Philippines

Introduction: why geothermal reservoir data needs legal protection

For geothermal projects, the most valuable “asset” is often not the wells, pipes, or equipment, but subsurface information: datasets on underground temperature gradients, permeability, reservoir pressure, steam-water ratios, and related interpretations. These datasets are expensive to generate, influence project valuation, and can determine bargaining power in partnerships and financing.

In the Philippines, however, geothermal energy is a State-owned natural resource, and the Supreme Court has treated certain resource-related information as legally significant in a way that can limit “exclusive corporate ownership” claims. This guide explains how to protect geothermal reservoir data as a confidential corporate asset—while staying consistent with State ownership principles, permitting rules, and confidentiality standards.

Governing legal principles

1) State ownership of geothermal resources, and what that implies for data

Philippine law declares that all geothermal sources or occurrences of geothermal energy, whether in public or private lands, belong to the State, and are inalienable and imprescriptible (Republic Act No. 5092, “Geothermal Energy, Natural Gas and Methane Gas Law,” 1967). This affects how companies should frame their data rights: an exploring corporation may assert proprietary rights over its compiled datasets, analyses, and trade-secret processes, but it must avoid contract clauses that operate as an alienation or sharing of the State’s sovereign interest in the resource or legally protected resource information.

In Ocampo, et al. v. Macapagal-Arroyo, et al. (G.R. No. 182734, 2023), the Supreme Court held (in the petroleum context) that information on the existence/non-existence of resources is a product of exploration and is tied to the State’s sovereign rights; sharing “joint ownership” of such information with foreign parties in the JMSU was found unconstitutional. While decided on the JMSU’s specific constitutional defects and context, the decision is a strong warning against structuring geothermal data arrangements as joint ownership of resource-exploration informationwith non-qualified entities, especially foreign-controlled ones.

2) Permits grant exploration rights, not automatic production rights

Under Republic Act No. 5092 (1967), a permit conveys an exclusive right to explore the covered area and conduct drilling and related work; but production and utilization are not included in the exploration permit (Republic Act No. 5092, 1967). This matters for data governance: exploration outputs (raw and interpreted) are typically generated under the exploration authority and should be managed as regulated project information, not treated as a purely private asset unconnected to State regulation.

3) Confidentiality duties in energy regulation (analogy and policy direction)

Recent sectoral legislation recognizes that regulators may receive confidential/proprietary submissions and restrict disclosure unless allowed or required by law. For natural gas, the Philippine Natural Gas Industry Development Act (Republic Act No. 12120, 2025) provides that the DOE (and other agencies, as applicable) will determine whether submissions are confidential/proprietary, and the Government shall not disclose them except with permission or when required by law (Republic Act No. 12120, 2025). Although geothermal and natural gas are regulated under different regimes, this illustrates an important policy direction: confidential submissions to DOE can be protected, but protection depends on proper classification, handling, and legally recognized grounds.

4) Constitutional limits when foreign entities are involved

If the project involves foreign participation in exploration or arrangements affecting exploration outputs, the constitutional restrictions on the exploration, development, and utilization (EDU) of natural resources must be satisfied. The Supreme Court emphasized that for agreements involving foreign-owned corporations in EDU, constitutional safeguards apply and presidential authority is central; arrangements that bypass these safeguards risk invalidity (Ocampo, et al. v. Macapagal-Arroyo, et al., G.R. No. 182734, 2023).

As further guidance in corporate/regulatory practice, SEC Opinion No. 08-23 (2008) underscores the 60%-40% Filipino-foreign equity limitation in corporations directly engaged in natural resource extraction/EDU, while distinguishing downstream use of already-extracted resources from restricted activities. The equity and control analysis must be handled carefully when geothermal exploration data is shared with affiliates, investors, contractors, or foreign technology providers.

What “exclusive property of the exploring corporation” can realistically mean

Given State ownership principles, the safer legal positioning is:

• The corporation owns (as proprietary corporate assets) its compiled datasets, databases, software configurations, interpretation models, reports, and trade-secret methods—subject to permit/service-contract terms and lawful government access/retention rules.
• The State retains sovereign rights over the geothermal resource and may have legally protected interests in exploration-derived information, especially where disclosure affects national interest or constitutional limitations.
• : controlling access, limiting disclosure, preventing misuse, and ensuring that third parties only receive limited, purpose-bound access under strict confidentiality and IP terms—not claiming absolute ownership against the State.

Legal steps to protect geothermal reservoir data as a confidential corporate asset

Step 1: Define and classify geothermal data internally (data mapping)

Create a written data inventory that distinguishes:

• Raw field data (temperature logs, pressure readings, flow tests, drilling data).
• Processed datasets (cleaned/normalized files, curated databases).
• Interpretations (reservoir models, geophysical inversions, probabilistic resource estimates).
• Commercial overlays (cost curves, development scenarios, financial models).

Then classify which items are “Confidential,” “Highly Confidential,” and “Restricted,” with handling rules for each. This is essential because regulators and courts tend to protect confidentiality when the owner demonstrates consistent confidentiality behavior, not just contract wording.

Step 2: Build confidentiality into contractor, consultant, and employee engagements

Most data leakage happens via service providers (drilling contractors, geoscience consultants, cloud vendors, laboratories). Require written agreements that include:

• Non-disclosure covenants covering both raw and interpreted geothermal data.
• Purpose limitation (use solely for the scope of work; no training of third-party models; no re-use in other projects).
• No “joint ownership” clauses over exploration information, especially with foreign counterparties—consistent with the Supreme Court’s warning against joint ownership of exploration information in the natural resources setting (Ocampo, G.R. No. 182734, 2023).
• Return/destruction obligations at end of engagement, with audit rights.
• Security standards (encryption, access logs, segregation, incident reporting timelines).

Step 3: Draft data-sharing rules for partners and investors (controlled disclosure)

When raising capital or entering a joint venture, structure disclosure so it remains controlled and traceable:

• Use a tiered disclosure approach: teasers → data room → limited dataset release.
• Adopt need-to-know access and individual user credentials for data rooms.
• Use clean team arrangements where appropriate (e.g., only certain reviewers can access high-sensitivity geological layers).
• Include injunctive relief and liquidated damages clauses (subject to enforceability considerations) for breach.

Where foreign entities are involved, confirm the transaction does not amount to prohibited participation in EDU activities or an arrangement that undermines State control and supervision principles highlighted by the Supreme Court (Ocampo, G.R. No. 182734, 2023), and corporate nationality restrictions discussed in SEC Opinion No. 08-23 (2008).

Step 4: Manage government submissions as “confidential/proprietary” with clear markings and justifications

In permitting and reporting, geothermal operators often submit technical reports that include sensitive reservoir data. Adopt these measures:

• Mark each page that contains confidential/proprietary information.
• Provide a confidentiality index identifying which sections are confidential and why (trade secret, competitively sensitive, security-related).
• Submit redacted public versions when feasible, with a separate unredacted regulator copy.

For policy support, note that energy sector statutes recognize confidentiality determinations and limits on public disclosure of confidential submissions, such as the confidentiality provision in Republic Act No. 12120 (2025) for natural gas regulation. While not geothermal-specific, it is consistent with the expectation that confidentiality must be claimed and supported, not assumed.

Step 5: Avoid “exclusive ownership” language that conflicts with State ownership and sovereign rights

Use careful drafting. Prefer: “Company Proprietary Data,” “Company Trade Secrets,” “Confidential Information,” and “Company Work Product.” Avoid clauses stating that subsurface resource information is owned jointly with (or transferred to) a counterparty in a way that resembles the unconstitutional “joint ownership of exploration information” criticized by the Supreme Court in Ocampo (G.R. No. 182734, 2023).

Step 6: Plan for disputes—injunction standards and proof of right

If you anticipate seeking court relief to stop disclosure or misuse, remember that injunctive relief typically requires showing a clear and unmistakable right and urgent need to prevent irreparable injury. In an energy-data dispute context, the Supreme Court has reiterated strict standards for a writ of preliminary injunction and recognized that regulators may require submission of reports/data for monitoring, with confidentiality limits respected (Philippine Institute of Petroleum, Inc., et al. v. DOE, G.R. No. 266310, 2024).

Accordingly, build your evidentiary record early: confidentiality policies, NDAs, access logs, classification memos, and proof that the data provides competitive advantage.

Common scenarios and how to handle them

Scenario 1: A contractor keeps copies of drilling logs and uses them in another project

Mitigation: include explicit “no re-use” and return/destruction clauses; require audit rights and certify deletion; restrict subcontracting; watermark datasets with unique identifiers.

Scenario 2: An investor requests full reservoir models before signing definitive documents

Mitigation: provide summary statistics first; release full models only under data-room controls and strict purpose limitation; consider staged access conditioned on exclusivity/term sheet milestones; avoid clauses that grant investor co-ownership of exploration information.

Scenario 3: Government requests complete technical datasets for regulatory review

Mitigation: comply with lawful requests but submit with confidentiality markings and a written explanation; provide a redacted version for any public-facing process; align submissions with sectoral confidentiality expectations (e.g., Republic Act No. 12120, 2025 by analogy), and maintain consistency in how you treat the same dataset internally and externally.

Quick reference table: protection tools and their purpose

Tool	What it protects	Main benefit
Data classification policy + access controls	All datasets and interpretations	Shows consistent confidentiality; reduces leakage risk
NDA with purpose limits + no re-use	Third-party access (contractors, consultants, investors)	Makes misuse a contract breach with clear remedies
Data room with logs, watermarking	Investor/partner diligence materials	Traceability and deterrence
Confidential markings + redacted submissions	Regulatory filings	Strengthens claim that information is proprietary
Careful constitutional compliance for foreign involvement	Cross-border engagements and information-sharing	Avoids invalidity risks highlighted in jurisprudence

Final observations and recommendations

Protecting geothermal reservoir data in the Philippines requires a two-track approach: (1) treat the datasets and interpretations as confidential corporate assets through rigorous internal controls and enforceable contracts; and (2) draft and operate consistently with State ownership of geothermal resources and constitutional rules on natural resource exploration—especially when foreign entities are involved.

As a checklist: adopt written classification and security policies; bind every recipient by NDA and purpose limits; avoid “joint ownership” language over exploration information; submit to government with confidentiality support; and keep records that prove secrecy measures and competitive harm. This combination best supports confidentiality in regulator interactions and potential litigation.

About Nicolas and De Vega Law Offices

 Nicolas and de Vega Law Offices is a full-service law firm in the Philippines.  You may visit us at the 16th Flr., Suite 1607 AIC Burgundy Empire Tower, ADB Ave., Ortigas Center, 1605 Pasig City, Metro Manila, Philippines.  You may also call us at +632 84706126, +632 84706130, +632 84016392 or e-mail us at [email protected]. Visit our website https://ndvlaw.com.